Having had the unpleasant task of calling ntl for faults support, and knowing that I was going to have to pay them for the priviledge image my surprise to hear:
"calls will cost you 5p a minute from a
BT line, other phone lines may vary", or words to that effect.
As it was a broadband problem, I had to redial the more expensive 0871 number to get a similar message:
"calls will cost you 10p a minute from a
BT line ..."

I'm an ntl customer, calling from an ntl line. Surely ntl should tell me, what it's costing using your own services, not what it's going to cost from a competitor's line.