Incorrect billing

I have logged a few calls with Cell C before debit date regarding incorrect statement all my calls either gets closed or no contact Cell C is billing me for data I have not received or requested. I have all the case numbers and now my account has been wrongfully debit. Cell C is just the pits. *** *** *** Can't speak to a supervisor it's just they will call you back in an hour and nothing when you call back your case is closed a new case is being logged.