new iPhone11

[Prufrock2]

I have just switched to O2 from Virgin but cannot get calls in or out on my new iphone11.  O2 gave me a new number but my new phone says I'm still on my old number but when I try to use it to call, it always says 'call failed' immediately. My new one defaults to Face Time when I call, but that doesn't work when I accept. My old iPhone7 is working fine on the original number.

I also tried logging in to My O2 website using various routes, but I just keeping being told that my account isn't recognized.

I have followed all instructions for transferring everything from my old phone to my new phone.

This is all totally confusing. Please advise.

[MI5]

@Prufrock2 

You'll need to call customer service as it sounds like the port hasn't completed.

Have you rebooted your phone?
Numbers here Guide: Coronavirus Community Help and Support 
When it comes to the reason you are calling stay silent for 15 seconds and you will be taken to the keypad options.
Press 2 for Everything Else
Press 5 for More Options
Press 7 for Anything Else which will put you though to someone.
Say "Upgrade", "Lost/Stolen" or "Fraud" if you have to, to get put through to someone.
8.00am is the best time to call if you can.