diff --git a/app/commands.py b/app/commands.py
index 826c2013b..898ecdb89 100644
--- a/app/commands.py
+++ b/app/commands.py
@@ -589,6 +589,17 @@ def process_row_from_job(job_id, job_row_number):
             )
 
 
+@notify_command(name="download-csv-file-by-name")
+@click.option("-f", "--csv_filename", required=True, help="csv file name")
+def download_csv_file_by_name(csv_filename):
+
+    bucket_name = getenv("CSV_BUCKET_NAME")
+    access_key = getenv("CSV_AWS_ACCESS_KEY_ID")
+    secret = getenv("CSV_AWS_SECRET_ACCESS_KEY")
+    region = getenv("CSV_AWS_REGION")
+    print(s3.get_s3_file(bucket_name, csv_filename, access_key, secret, region))
+
+
 @notify_command(name="populate-annual-billing-with-the-previous-years-allowance")
 @click.option(
     "-y",
diff --git a/notifications_utils/recipients.py b/notifications_utils/recipients.py
index 68e2cb101..0e40ea2ab 100644
--- a/notifications_utils/recipients.py
+++ b/notifications_utils/recipients.py
@@ -602,12 +602,34 @@ def validate_us_phone_number(number):
         raise InvalidPhoneError(exc._msg) from exc
 
 
+def show_mangled_number_clues(number):
+    print(f"ORIG {number}")
+    translator = {
+        "1": "X",
+        "2": "X",
+        "3": "X",
+        "4": "X",
+        "5": "X",
+        "6": "X",
+        "7": "X",
+        "8": "X",
+        "9": "X",
+        "0": "X",
+    }
+    for key in translator:
+        number = number.replace(key, translator[key])
+
+    return number
+
+
 def validate_phone_number(number, international=False):
     if (not international) or is_us_phone_number(number):
+        print("FAST EXIT")
         return validate_us_phone_number(number)
 
     try:
         parsed = phonenumbers.parse(number, None)
+        print("PARSED")
         if parsed.country_code != 1:
             raise InvalidPhoneError("Invalid country code")
         number = f"{parsed.country_code}{parsed.national_number}"
@@ -619,7 +641,11 @@ def validate_phone_number(number, international=False):
     except NumberParseException as exc:
         if exc._msg == "Could not interpret numbers after plus-sign.":
             raise InvalidPhoneError("Not a valid country prefix") from exc
-        raise InvalidPhoneError(exc._msg) from exc
+        if not isinstance(number, str):
+            raise InvalidPhoneError(f"Number must be string, not type {type(number)}")
+        raise InvalidPhoneError(
+            f"Invalid phone number looks like {show_mangled_number_clues(number)} {exc._msg}"
+        )
 
 
 validate_and_format_phone_number = validate_phone_number
diff --git a/poetry.lock b/poetry.lock
index 1c5be2257..28d284d0b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand.
 
 [[package]]
 name = "aiohttp"
@@ -2098,13 +2098,9 @@ files = [
     {file = "lxml-5.2.2-cp36-cp36m-win_amd64.whl", hash = "sha256:edcfa83e03370032a489430215c1e7783128808fd3e2e0a3225deee278585196"},
     {file = "lxml-5.2.2-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:28bf95177400066596cdbcfc933312493799382879da504633d16cf60bba735b"},
     {file = "lxml-5.2.2-cp37-cp37m-manylinux_2_12_i686.manylinux2010_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:3a745cc98d504d5bd2c19b10c79c61c7c3df9222629f1b6210c0368177589fb8"},
-    {file = "lxml-5.2.2-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:1b590b39ef90c6b22ec0be925b211298e810b4856909c8ca60d27ffbca6c12e6"},
     {file = "lxml-5.2.2-cp37-cp37m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:b336b0416828022bfd5a2e3083e7f5ba54b96242159f83c7e3eebaec752f1716"},
-    {file = "lxml-5.2.2-cp37-cp37m-manylinux_2_28_aarch64.whl", hash = "sha256:c2faf60c583af0d135e853c86ac2735ce178f0e338a3c7f9ae8f622fd2eb788c"},
     {file = "lxml-5.2.2-cp37-cp37m-manylinux_2_28_x86_64.whl", hash = "sha256:4bc6cb140a7a0ad1f7bc37e018d0ed690b7b6520ade518285dc3171f7a117905"},
-    {file = "lxml-5.2.2-cp37-cp37m-musllinux_1_1_aarch64.whl", hash = "sha256:7ff762670cada8e05b32bf1e4dc50b140790909caa8303cfddc4d702b71ea184"},
     {file = "lxml-5.2.2-cp37-cp37m-musllinux_1_1_x86_64.whl", hash = "sha256:57f0a0bbc9868e10ebe874e9f129d2917750adf008fe7b9c1598c0fbbfdde6a6"},
-    {file = "lxml-5.2.2-cp37-cp37m-musllinux_1_2_aarch64.whl", hash = "sha256:a6d2092797b388342c1bc932077ad232f914351932353e2e8706851c870bca1f"},
     {file = "lxml-5.2.2-cp37-cp37m-musllinux_1_2_x86_64.whl", hash = "sha256:60499fe961b21264e17a471ec296dcbf4365fbea611bf9e303ab69db7159ce61"},
     {file = "lxml-5.2.2-cp37-cp37m-win32.whl", hash = "sha256:d9b342c76003c6b9336a80efcc766748a333573abf9350f4094ee46b006ec18f"},
     {file = "lxml-5.2.2-cp37-cp37m-win_amd64.whl", hash = "sha256:b16db2770517b8799c79aa80f4053cd6f8b716f21f8aca962725a9565ce3ee40"},
@@ -2493,6 +2489,7 @@ files = [
     {file = "msgpack-1.0.8-cp39-cp39-musllinux_1_1_x86_64.whl", hash = "sha256:5fbb160554e319f7b22ecf530a80a3ff496d38e8e07ae763b9e82fadfe96f273"},
     {file = "msgpack-1.0.8-cp39-cp39-win32.whl", hash = "sha256:f9af38a89b6a5c04b7d18c492c8ccf2aee7048aff1ce8437c4683bb5a1df893d"},
     {file = "msgpack-1.0.8-cp39-cp39-win_amd64.whl", hash = "sha256:ed59dd52075f8fc91da6053b12e8c89e37aa043f8986efd89e61fae69dc1b011"},
+    {file = "msgpack-1.0.8-py3-none-any.whl", hash = "sha256:24f727df1e20b9876fa6e95f840a2a2651e34c0ad147676356f4bf5fbb0206ca"},
     {file = "msgpack-1.0.8.tar.gz", hash = "sha256:95c02b0e27e706e48d0e5426d1710ca78e0f0628d6e89d5b5a5b91a5f12274f3"},
 ]
 
@@ -3475,7 +3472,6 @@ files = [
     {file = "PyYAML-6.0.1-cp311-cp311-win_amd64.whl", hash = "sha256:bf07ee2fef7014951eeb99f56f39c9bb4af143d8aa3c21b1677805985307da34"},
     {file = "PyYAML-6.0.1-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:855fb52b0dc35af121542a76b9a84f8d1cd886ea97c84703eaa6d88e37a2ad28"},
     {file = "PyYAML-6.0.1-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:40df9b996c2b73138957fe23a16a4f0ba614f4c0efce1e9406a184b6d07fa3a9"},
-    {file = "PyYAML-6.0.1-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:a08c6f0fe150303c1c6b71ebcd7213c2858041a7e01975da3a99aed1e7a378ef"},
     {file = "PyYAML-6.0.1-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:6c22bec3fbe2524cde73d7ada88f6566758a8f7227bfbf93a408a9d86bcc12a0"},
     {file = "PyYAML-6.0.1-cp312-cp312-musllinux_1_1_x86_64.whl", hash = "sha256:8d4e9c88387b0f5c7d5f281e55304de64cf7f9c0021a3525bd3b1c542da3b0e4"},
     {file = "PyYAML-6.0.1-cp312-cp312-win32.whl", hash = "sha256:d483d2cdf104e7c9fa60c544d92981f12ad66a457afae824d146093b8c294c54"},
diff --git a/tests/app/service/send_notification/test_send_notification.py b/tests/app/service/send_notification/test_send_notification.py
index 9b833bfd0..036c5bac8 100644
--- a/tests/app/service/send_notification/test_send_notification.py
+++ b/tests/app/service/send_notification/test_send_notification.py
@@ -79,7 +79,7 @@ def test_should_reject_bad_phone_numbers(notify_api, sample_template, mocker):
             assert json_resp["result"] == "error"
             assert len(json_resp["message"].keys()) == 1
             assert (
-                "Invalid phone number: The string supplied did not seem to be a phone number."
+                "Invalid phone number: Invalid phone number looks like invalid The string supplied did not seem to be a phone number."  # noqa
                 in json_resp["message"]["to"]
             )
             assert response.status_code == 400
diff --git a/tests/app/user/test_rest.py b/tests/app/user/test_rest.py
index a388d264e..dc7b78e82 100644
--- a/tests/app/user/test_rest.py
+++ b/tests/app/user/test_rest.py
@@ -226,7 +226,7 @@ def test_cannot_create_user_with_empty_strings(admin_request, notify_db_session)
     assert resp["message"] == {
         "email_address": ["Not a valid email address"],
         "mobile_number": [
-            "Invalid phone number: The string supplied did not seem to be a phone number."
+            "Invalid phone number: Invalid phone number looks like  The string supplied did not seem to be a phone number."  # noqa
         ],
         "name": ["Invalid name"],
     }
@@ -949,7 +949,7 @@ def test_cannot_update_user_with_mobile_number_as_empty_string(
         _expected_status=400,
     )
     assert resp["message"]["mobile_number"] == [
-        "Invalid phone number: The string supplied did not seem to be a phone number."
+        "Invalid phone number: Invalid phone number looks like  The string supplied did not seem to be a phone number."  # noqa
     ]
 
 
diff --git a/tests/notifications_utils/test_recipient_validation.py b/tests/notifications_utils/test_recipient_validation.py
index ff48df775..cc6c2a676 100644
--- a/tests/notifications_utils/test_recipient_validation.py
+++ b/tests/notifications_utils/test_recipient_validation.py
@@ -9,6 +9,7 @@ from notifications_utils.recipients import (
     get_international_phone_info,
     international_phone_info,
     is_us_phone_number,
+    show_mangled_number_clues,
     try_validate_and_format_phone_number,
     validate_and_format_phone_number,
     validate_email_address,
@@ -324,6 +325,11 @@ def test_phone_number_rejects_invalid_international_values(phone_number, error_m
     assert error_message == str(e.value)
 
 
+def test_show_mangled_number_clues():
+    x = show_mangled_number_clues("848!!-202?-2020$$")
+    assert x == "XXX!!-XXX?-XXXX$$"
+
+
 @pytest.mark.parametrize("email_address", valid_email_addresses)
 def test_validate_email_address_accepts_valid(email_address):
     try: