I have the same problem too - unable to make or receive calls, unable to send or receive texts. I've tried changing various network settings, switching off and on, switching flight-mode on and off, no luck. Been going on for a while. Sad face.
Thanks for posting. Hopefully we can turn that sad face upside down.
Sorry that you're also having the same problems as the other community members. I'll see what I can do.
I know you've tried a few things already - but when you say various network settings, did you do the manual network search? Did anything show up when you ran it?
Are you able to test your SIM in another handset? This will help us narrow down what could be causing the issue. It could be the SIM, handset or the actual network so we can start to narrow it down if you're able to try that?