Last week I went to the shop in Stratford centre to exchange a couple of headsets for a voucher and received an offer of £430 for all of them which I accepted, on the same day I was told by the staff member who was processing my order that I could be charged up 10% of the value of the items since I was selling a couple of them and I said I was ok with it. Following day I received a call in the evening saying that instead of 10% I was gonna be charged staggering 30% which is absolutely unheard of (even admitted by their own staff), it's unbelievable how these scumbags try to find ways to rip you off when something doesn't go the way they want. The store manager promised me to investigate the issue but obviously never got back to me, absolutely useless disgusting costumer service.. some of these people deserve to be in jail. Today I returned to the shop and collected my items back, some staff members couldn't believe what happened as this was clearly a decision made by a coward low life human being from the head office who is too weak to talk or explain himself, absolute trash of society