Customer Service -don't you love it? - ER - NO.

As advised by BT I rang them on 19th November to tell them that I did not wish to renew a particular one year contract, starting the following day. No problem. 
Today I received a BT bill on which was a small amount for a "contract early cancellation charge" dated 18th November.
The amount was trivial. Shall I bother? This was overtaken by "why should I pay the wrong amount" and "they could make a fortune if they this this to everyone."
I rang. After the preliminaries this was the conversation:
ME. You have charged me a cancellation charge. Why?
BT. Because you cancelled early.
ME. No, I didn't.
BT. Yes, you did.
ME. No, I didn't.
BT. Yes, you did.
ME. I have an order reference number.
BT. Oh.
ME. Would you like it?
BT. Yes.
ME. (after giving the reference). What is that about?
BT. It is an order confirming you do not wish to renew your contract.
ME. There's lucky. Does it have a date?
BT. Yes.
ME. What is that date?
BT. 19th November.
ME. So why have you charged me a cancellation charge dated 18th November.
BT. Because you cancelled your contract early.
ME. No, I didn't.
BT. Yes, you did.
ME. May I speak to a supervisor please?
BT. I am a supervisor.
ME. Your boss then.
The phonecall ended up lasting an hour.
During that time it was escalated up two further levels. At each level I had to go through the entire conversation as above until, at the last level, by which time both my temper and blood pressure were increased somewhat, the chap said "I have no idea why you were charged and I will get it removed."
He then spoilt things by asking "and what did you think of BT's service to you on this phonecall?"
PS. The sum involved was 10p

Today I received a BT bill on which was a small amount for a "contract early cancellation charge" dated 18th November.

The amount was trivial. Shall I bother? This was overtaken by "why should I pay the wrong amount" and "they could make a fortune if they this this to everyone."

I rang. After the preliminaries this was the conversation:
ME. You have charged me a cancellation charge. Why?
BT. Because you cancelled early.
ME. No, I didn't.
BT. Yes, you did.
ME. No, I didn't.
BT. Yes, you did.
ME. I have an order reference number.
BT. Oh.
ME. Would you like it?
BT. Yes.
ME. (after giving the reference). What is that about?
BT. It is an order confirming you do not wish to renew your contract.
ME. There's lucky. Does it have a date?
BT. Yes.
ME. What is that date?
BT. 19th November.
ME. So why have you charged me a cancellation charge dated 18th November.
BT. Because you cancelled your contract early.
ME. No, I didn't.
BT. Yes, you did.
ME. May I speak to a supervisor please?
BT. I am a supervisor.
ME. Your boss then.
The phonecall ended up lasting an hour.
During that time it was escalated up two further levels. At each level I had to go through the entire conversation as above until, at the last level, by which time both my temper and blood pressure were increased somewhat, the chap said "I have no idea why you were charged and I will get it removed."

He then spoilt things by asking "and what did you think of BT's service to you on this phonecall?"

PS. The sum involved was 10p
