I stupidly signed up with talk talk in July last year. I cancelled after two days, taking advantage of the 14day cooling off period. They tried to fob me off by saying there was a 14 day "settling down" period on my line, which lo and behold, happened to coincide with the cooling off period! I told them to cut the crap and stop telling lies, and to cancel my account. She said she couldn't do that, due to a "fault" on the line!
In the end, I contacted dido Harding, the CEO, who put me in touch with Laura Whittam, who is the manager of the CEO,s office. Her details are below. I strongly suggest you all bypass the stupid Indians, and go direct to them.