also seems to yield no results. I've checked the status of the request and although it says "COMPLETED". I still see the "+15101234567" value in its original form in the Interaction Details Report.
Fyi "15101234567" is just a fake number used for example. I've tried the same request with various Ani numbers that I know for sure have come through, with no observable results.
Right, looking into why your requests in your org aren't affecting your data requires investigation via Care. I don't have access to your org's data to look into the specific execution of that request.