At&t iPHONE 7 unlocked Blacklist Removal
I got my At&t iPhone 7 unlocked 18 months ago from a local seller for $650. It's currently system iOs 11.4. I used it for the last 18 months on H20 carrier but recently a month ago when I changed my carrier from H20 to T-mobile, my service was stopped by them and the phone was reported lost or stolen. I contacted the seller and went up to them several times but they are just running away from the problem and they keep saying that It will take time and also they are refusing to return the phone. Please, I need your help as I spent $650 on the phone. Will it ever be cleared from the blacklist? What do I do??