got a bill from BT today for 566.12 quid

. so i phoned them to find out how the duck i owed them this much, BT; well Sir it is down to you cancelling your BT internet within the contract,
me or mug as i am now called; but i ordered phone TV and internet and the TV didn't work so i cancelled the lot within the 10 days i thought i had,
BT; no Sir did you not read the terms and conditions
Mug; no not all of them,
BT; it does state in them that if you cancell at any time you are liable for a fee.
Mug; but this is the first i have heard, i never got any info until now about,
BT;we sent you 2 bills in may by email for 311 pounds for the cancellation,
Mug; but i never received any email,
BT; we have prof of sending it,
Mug; prof of sending is not prof of receiving ?
BT; but we have prof sir, and the extra is intrest
Mug; well i don't have that type of money i.e 566.12,
BT; well Sir you will have to work that out with the debt collectors,
Mug; well thanks for nothing,
BT; is there i can help you sir,
Mug; no thank you good bye,
BT; good bye sir.
Well that is the short version glad it was free call.
Sorry for boring you but had to get it off my chest
So i personally say BT say well clear off