NTL have owed me money since I cancelled my account with them and they carried on charging me for several months.
I've got a letter from them admitting they were at fault and indicating the amount they were going to refund me. That was last September.
Despite several letters and phone calls I've still not received my money. When I wrote to them they ignore me and when I phone them I'm told that they'll look into it and get back to me, which of course they don't.
I've had to right the money off, as it's not enough to warrant the costs of the small claims court.