Delayed Notification of Voicemail
I have an iPhone 12 Pro Max with T-Maybe and periodically I see a serious delay in the timing of notifications when someone leaves a voicemail. I received a notification 2 1/2 hours after a VM was left this morning. I have raised this issue repeatedly with the carrier, they now claim it affects all Apple devices - except, everyone else I know with an Apple. Is this an Apple issue, and if so why has it not been resolved in the 3+ months since it first appeared? The solution last time, they told me, was upgrade the iOS, they are selling that story again.
Windows, Windows 10