I have provided clear non-disputable evidence that the payment was made successfully and my bank backed up this evidence. Full Tilt Poker continue to send automated emails repeating exactly the same message. They continue to claim that I owe them money. They obviously believe I am extremely naive and that I will simply pay the money again. They think it is ok to request a double payment.
Either Full Tilt Poker staff are extremely stupid and do not know how to check with their bank that payments have been completed successfully or they are operating a scam whereby they knowingly and regularly request double payments from customers. If the latter is the case, they obviously believe their customers are extremely naive.
Full Tilt Poker are also extremely slow to deal with any type of query. It takes a minimum of 5 days to receive a reply. Obviously email is too big a challenge for their small brains.
Please see other people's opinions which will backup my claims: