Voicemails got deleted after updating to iOS 17.4 on iPhone

Before I do any update I always make sure to backup my entire phone. Anytime in the past I have ever downloaded an update all of my information is transferred over. But this morning to my horror I saw that the IOS 17.4 update deleted my voicemails. I checked online and saw that millions of other users had the same issue. I went down the line of things other iPhone users suggested to do but no luck. I contacted Apple support and they asked me to login to my iCloud , they asked me to do a network reset , turn on and off airplane mode. Do a factory reset And then ultimately told me they would call me at 1 and to reach out to my carrier. AT&T said they do not have access to our voicemails nor a recovery plan. Apple reached out to me at 1 and were no help. I told them that there has to be a bug within the update because millions of others are having this same issue. It has nothing to do with the carrier. It has everything to do with their update.

My voicemails are so important to me because it has my deceased grandfather’s voicemails and my deceased mother in laws voicemails. Those voicemails were my life line to them. My heart is so broken and to know that I may not be able to retrieve them has me so angry and disappointed in Apple. Especially since they are denying it and saying ask your Carrier.

I hope you can find a solution to me and everyone else having this issue. @Apple

[Re-Titled by Moderator]