Vodacom de*****ing customers

Last month i lost 17 points on my Clearscore report, because of late payment. I couldnt pay my account in time as i was querying Vodacom on the amount outstanding. i was supposed to be paying R18 as per the latest data i took, but instead my account was over R300, then was reduced to R100+. this after i have cancelled my contract since Aug 10th giving them a 1 month notice before contract ends 10 September. The didnt cancel and instead i ended up paying over R400 to cancel, Until today i still dont have my cancellation letter and i have called then numerous times compalining and demanding they cancel, to no avail. they de***** people out of money while pretending they are resolving the issue, only to get people frustrated and listed for bad record.