Ash,
You are wrong to think if you dont pay their bill you cannot get another carrier. I was with AT&T for about 14 yrs when I noticed that a call to Canada that was normally billed at 15cents per minute was now $1.80 a minute. I called and they explained that since I didnt have their new service I would have to pay. While I was protesting the bill I was able to change to verizon smart service, I prepay and get 7cents a minute US 11 cents Canada and 17 cents to Finland for when I find CRC's phone number again. Cost 25 to the local telco to make the change but verizon reimbursed me.
ATT send my bill to collections until I told them I would pay a lawyer 2 thousand dollars rather than pay a penny over 15cents per minute. They adjusted the bill and I paid it.
my 2centavos
thanx,
bill