Holding forever and line gets cut off.

My cell phone contract ended on the 20th February 2015 and I have for the past 3 days been trying to cancel this contract as I do not wish to continue with it. I went into South Gate branch to try and do this and was told to call 808. When I told the consultant that I have tried that and have held the phone for a long time they said to me that I mist practice patience. I have really had it because the next thing money will be debited from my account because I did not formally terminate the contract and the only way to do this is via phone. How ridiculous!!!!