My att and/or my Verizon in bookmarks added automatically

I saw this topic related to “my att” showing up in bookmarks over and over even though user deletes it. That topic closed so here goes again:

When I had AT&T, the bookmark for safari “my at&t” kept showing up (would take you to legit at&t wireless homepage). I would delete it but by magic, a few days later it would reappear. Same as old topic on this issue that noone could answer why.

So I just changed to Verizon Wireless and guess what?!? NOW “My Verizon” is showing up as an unwanted bookmark in same place as My AT&T used to show up (and att bookmark gone). So obviously there is something in the carriers settings or on the SIM card maybe that codes for their stupid bookmark to keep showing up. I don’t know by but I find it really annoying. I have the app so why do I need bookmark to be forced upon me for carriers website homepage.