This news is a disgrace, and another thing to encourage people to leave NTL. I can understand them charging for normal customer service things, like wanting to change you package etc.
But if you're either phoning to report a fault with THEIR system, or more often, to get an incorrect bill put right, you should not have to pay. After all you're phoning because you have to, not by choice, to get something put right that's their fault.
They shouldn't be allowed to profit from faults and poor service, it only encourages them to be even worse at what they do, to make sure they get even more calls.
I hope they have a rethink or they could see customers leaving in droves. It's bad enough that they charge a connection fee now per call instead of a minimum charge like it used to be. I've still got my original contract from when I joined ntl 10yrs ago....line rental £4.28 a month....shows how much they've gone up over the years.