Telkom poor service

Poor service by Telkom. I requested to close my contract at the end of November knowing that the contract comes to an end. To my surprise in December I received data and air time, which I subsequently queried. I was then told that I will only pay for the benefits (data and minutes). I expected these benefits to be available for the whole month, but to my surprise, Telkom decided to block my number giving me no access to the benefits. Their consultants are telling me that I have forfeited the benefits which I still have to PAY. This is crazy, I wanted to take another contract with them but I am reconsidering that after this experience.