Poor o2 itemised billing and customer care

[carolinead]

I signed up to o2 18months contract just over a month ago, and i am shocked at how i have been tricked with false promises. I was prromised unlimited Long weekend, and an automatic itemised bill. I have not received an itemised bill, though i have received two bills now, and their on-line bill record does not differentiate my normal 800 minutes allowance from the permitted unlimited long weekend minutes. They jumble together all my call minutes, even those to customer service, but still tell me that it is not counted. It is impossible to know what minutes I have used of my normal 800 minutes allowance, hence preventing me from taking advantage of my full allowance as i am always affraid that i may be using minutes above my allowance. Their customer service is very poor as staff are argumentative, seem to know it all before you speak, and abrupt in their tone of voice. Each one des not seem to know what is recorded on the computer, and they waste time.
Going to my local store where i purchased the contract is useless as they have no access to my record online, and so cannot discuss my problems or help solve them.
What is my chance of cancelling this contract as they have not met up to their part of the contract?