I ordered a new sim and o2 activated the new one, he still has the handset however now I can use what I am paying for.
If you want to go further, report the phone stolen and o2 will block it so he'll have to buy a new phone as well as a new sim card
How did you manage to swap the sim if your ex was using the phone? Did you report it lost or stolen and got the new sim delivered to your address?
Thank you so much for your advice
No problem at all.
You've done the right thing and the law is on your side
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