Thieves. Just got someone knocking at my door for a charge from over ten years ago. EE sent me a new SIM card in 2009 saying they need to do this and that I am to cut up my old sim and call them and cancel, I did this. Fast forward 11 years later and turns out they didn't cancel this contract and have run up a bill of 1285 pounds. Absolute scumbags, and this is all due to them.