:Welcome: to Cable Forum. Sorry it's not in better circumstances
You say ntl have not connected a phone line

but yet it's part of the TV deal. I know it's a "freebie" add on, but effectively it has a value to you - if ntl don't supply it. so that should be pursued and if they don't install - it's ntl's problem, not yours and you should seek a bill reduction.
As for them not identifiying your account, it sounds like someone hasn't got some proper account records appearing on their screen. If you have an account number, money is coming out of your bank account, they must be able to trace, but the front line CS doesn't want the hassle. Call again and ask for a supervisor if you get this run around again.
Try doing a search for "widescreen" it may shed more light on your specific issues.