Re: I was scammed by someone working for BT...
Like I said replying to another comment, anyone calls about saving you pounds, DON'T. It may be legitimate but it also may mean worse terms. You can't make a decision on the spot then without having possession of all the facts, so don't bother.
If you want to save money, do it and call them in your own time, once you have thoroughly researched the savings.
A few years ago BT would have Option 1, Option 2, Option 3 as call plans and I was on Option 1 (the minimum "pay for all calls as you make them" one. They used to also subdivide the call plans so that you could get Option 2 (the "evenings and weekends are free" one) for the same price as Option 1, so I was getting calls where BT was "helpfully" offering me Option 2 for the same price. Of course I said "no" and I further looked at the exact terms - this Option 2 "same price" one would have meant that I would have been recontracted for a year AND it'd be a rolling contract so I wouldn't be able to get out of it except in a very short timeframe just before it rolled over, every year. My Mum got caught by that one, which was an issue years later when she tried to get out of it, and couldn't