O2

I have just gotten my new iPhone 13 in the post and put a new SIM card in it, backed up from my old iPhone is in progress. I have tried calling and it is just silent and stays on the calling screen but doesn’t call and when I try to text it says numb...

I have just upgraded to an iPhone 13 yesterday and it said in stock at the time, I paid extra for delivery today but it is now still being processed and saying that it is awaiting stock? Not sure why it has changed instantly once I ordered it but why...