I was given an "unlock code", but the person I spoke to didn't know what I was supposed to do with it. This is the same as the "unlock code" I got with the new SIM in the recent sim swap (which they cancelled in order to give me a PAC). I think it must be a SIM unlock code rather than a network unlock code, but the person I spoke to said it was the correct code for my mobile (based on the IMEI number).
I've also tried codes found online with no luck. I have now entered the wrong code into the 'phone at least 4 times. Each time it says "Code error [animated tick]". It still does not recognise the new provider's SIM, but is still working with my old Virgin SIM (for now).
How do I unlock my phone so I can leave this mess behind and start using my new provider?