I cannot get visual voicemail to work on my phones, I phone 7, or either I phone 11
My iPhone 7 visual voicemail stopped working about 10 days ago. At & T cannot get it back. During this time I ordered 2 I- phone 11's. Neither can get visual voicemail. Only my I phone 6SE and I phone 6 are able to get visual VM. Is this a glitch in the update? I have tried resetting to factory reset, switching on/off airplane mode. Checking my plan - it is up to date and includes visual VM. The phones won't even tell me I have a voicemail pending. At & T promised to work on the problem and get back in 48 h, but I have been waiting over 48 h now. Nothing.
iPhone 11, iOS 14