Apparently there is a reason for this. A bit of a saga. Read on if you want...
I was contacted by VM Mobile asking if I wanted a new phone and was given a few choices. Being a person who likes the small form phones I chose the Apple SE along with a 24 month 5G contract (the more discerning will spot a flaw already).
The new phone duly arrived. I put my current SIM into it and hey presto all good. Except I didn't get 5G. Using the text system I asked whether I would be getting a new SIM to allow 5G. Was then told the phone was not compatible with 5G.
Discussion ensued on why the agent would sell me a phone which was not 5G compatible and provide me a 5G plan. I returned the phone (that's a whole story in itself) and put the SIM back in my new phone.
Oh dear. Swapping the SIM between phones seemed to upset iMessage and Facetime - they wouldn't register the phone number. Contacted VM on the text service again and eventually, after trying all the usual reset nonsense, conceded that I need a new SIM. Which duly arrived and did indeed solve the problem.
All of that was in March.
So a month later VM have decided they can't put me back on my old plan because it no longer exists. And stuck me on a holding plan.
Thank you for your post. I am really sorry to hear of your experience and these complications you've had with your new mobile phone order and tariff plan.
I can see in your last post that you've stated you're currently arranging for a new plan to be added, which is something that sadly we're unable to arrange and put in place for you from here I'm afraid. I'm sure that my colleagues will be able to assist with that, and all of our contact details can be found here.
If there's anything else that we can help you with, please do let us know.