Same text message coming from a different short code every 3 days for 4 months
For the past 4 months I have been receiving the same text message every 3 days. It looks like it's coming from my Credit Union but it is definitely not. The text comes from a different short code each time. The first call came from 100-0001, then 100-0002, 0003, 0004, etc. My most recent call came from 100-0029. I have called ATT several times but they are not able to stop the calls from coming. Twice, I replied STOP but the texts did not stop. I have an iPhone 8.
Any help would. be greatly appreciated.