My sim is not working

My SIM card is not working again. I can not make calls, receive or send messages

I’m in the uk Please help my SIM card stopped working

09064350883 I did a welcome back on this number yesterday and I was ask to put the sim on my phone this evening which I did but is not working.

I got a new MTN sim and afterwards opted for an eSIM. However I changed my mind over the e-sim because the phone will soon be changed. I was told it will take 24 hours to revert...