Hi @sherratt5 ,
Welcome to the community!
Thanks for bringing this to us. We're sad to knwo that you're having issues with the incoming call of the phone service.
We did an article that you may find helpful about basic troubleshooting please see the link below.
In the event issue still persist, please shoot me a private message with your account details (Username/Customer ID together with the address on file).
I moved from Telstra to Tpg in Dec 2020. For some reason I can't get Telstra mobile or Landline calls to my landline. I have had it looked at twice, now escalated 3rd time !!!. Telstra no help as left them! Getting Optus calls is no issue. Anyone any advice