iPhone voicemail comes as an audio clip via text message

I want to share this with the Community because I've been trying to fix this since 10/15/2021. On that day, my iPhone's voicemail stopped coming to the visual voicemail but rather from a text message from phone number 585-326-3403. I reached out to my carrier. (AT&T) 4 times. They had no clue what to do and reset my voicemail but no improvement. I know that the carrier is in charge of voicemail and not Apple so I just gave up for a while because it was so frustrating. I purchased a new phone thinking it was a glitch or hack of my phone. I set up the new phone manually for fear that my phone might transfer whatever caused the problem but still the same problem on the new phone. I called Apple and the person was fantastic and she had heard of it before although my carrier was completely lost as to what I was saying. The Apple rep even helped me talk to AT&T for the 4th time via 3 way call I made. I tried everything the Apple rep suggested but nothing worked. I was about to ask for a phone number change after having this number for 18+ years...BUT I figured it out after doing a web search of the phone number sending me the audio clips in text form. I finally found the following articles on a "tech" site here: https://arstechnica.com/civis/viewtopic.php?t=1404705 and followed through on the "robokiller" one and I don't even remember downloading that app but I guess I must have years ago? They say that there is a glitch in their app that can cause voicemail to be forwarded to one of their sites. I followed the instructions you can read here: https://support.robokiller.com/hc/en-us/articles/360027065591-How-can-I-disable-RoboKiller-on-my-iPhone-or-Android-device- and my voicemail is finally coming in to my iPhone's visual voicemail like it is supposed to. I wanted to share with you all so that maybe you won't have to go through what I've gone through for 4 months....even buying a new phone. lol. This 63 year old grandmother is quite proud to have persevered and fixed it and you can too!!!