Bad service , and *******...

I am having a very bad experience with cell c, when I opened my account the consultant **** saying that I can cancel any time. They did the installation and then **** with their promotion. Another issue is that I have been listening me as I missed 4 months of payment damaging my credit score. And I don’t ow them anything. But until todaybits showing that I have never paid I have been missing my payments . Now I am very annoyed because the was a month they claim the debit order didn’t go thru and they charged me entra 60 rand I paid for the first time from October until the next bill of feb I am still paying that 60 rand extra so this means my installment when up without any notice and communication. Please help me I need my Monet back or they can just cancel my contact without any penalty fee cuz it’s not my fault they service is bad . Internet very slow I’m very unhappy with everything.