Hi
Situation resolved.
I received a phone call off bt, and the guy appologized and admitted it was an error on their part. I had the full amount wiped and the account is now clear. Such a relief, yet it should not have happened in the first place. How is it I feel greatful when I have gone through sleepless nights about this? Strange but at least thats one thing off my mind. I also asked for it in writing and received an email, confirming this, although I would prefer a letter.
Thanks for the posts that included the emails of the ceos of companies as this is the route I took.
Anybody else in this situation, do not take the attitude off some of the sales/customer service staff. They will not accept that there is an error no matter how often or logically you explain it to them. Go to the heads of companies.