I have seen both sides of the coin on this one.
Yes, ntl like most large companies treat long term customers like s**t when it comes to special offers and deals, I think ntl has gone a complete cycle on this issue.
In the past ntl used to bend over backwards giving away free service to grumbling customers, that couldn't go on and CS were eventually stopped from giving out free service willy nilly to any joe public who complained, after word got around that it was easy to get something for nothing out of ntl.
The ones that suffer now are honest customers who have a real problem!
Too much money was thrown away by CS to customers they had on the end of the phone complaining, rather than listen to technicians/engineers who had visited the customer and found no fault.