@pottyperson "Unless there's something the OP has overlooked, it seems to me that BT is wholly liable to correct the error. Their refund offers are tantamount to admission of liability and it would be interesting to know what legal force allows them to restrict the refund as a kind of punishment for the perceived negligence of the OP."
The line has to be drawn somewhere though otherwise what's to stop anybody phoning up & saying they never agreed to something years ago & getting it refunded?
