I was recently COLD CALLED from BT's International office in India (Well the guy sounded to Indian, and the CLI said International)
It was to offer me FREE unlimited weekend and evening calls for no extra cost, if I agreed to keep my line rental with BT for a further 12 month.
I went along with him for about 20 minutes (I was bored ok

) asking several questions, what was in it for me, what was in it for them, then he finally plucked up the courrage to say "SO YOU WANT THIS OR WHAT?" to which I was unable to help myself any longer, i replied "Want what? Who are you again?"
I really do hate cold callers, wasting my time, so I waste their time just as much.
well in the end, I agreed to take up the offer.
Anyway, back on track. Yes it is your word against theres, and if no recording is available, BT has a policy of accepting the customers story, so not to appear to call the customer a liar.