Rain mobile Services/network/Wifi

It has been a great provider until recently when they are charging me for month I did not use it. They have cut my services after I paid for November. When I check they say I owe arrears for the month of October. In the month of October we didn't pay for the service because we were mostly in Polokwane. We didn't even use it because we knew that if we don't pay the service will be cut off and we resume after pay again. I never signed a term contract were I am forced to pay even in months were I don't use the service. If I wanted debt, arrears and things like that I would have opened a contract with Telkom. But maybe this is only the start of our problems since rain joined forces with Telkom. This is truely disappointing, they are trying to corner me into paying for a month wherein I didn't use their service.