Terrible Service

Terreble Service!! I received my Rain on 25th July and canceled on the 26 July as it wasnt working in my flat. received cancelation email just after I called onthe 26st. First of August my account was debited with R98. Emailed on the 2nd, 12th,15th for no collection on Rooter, so I called on the 15th only to hear that my account was never cancelled! and that they will escelate it and call me back hence i am still waiting on that call back and it is the 2 September!. Received a SMS on the 30th August saying you successfully cancelled your sim and my account will be debited again on the 11st of September!! after i canceled it a month ago! When I called they just say someone will call me back and that they will escelate collection but it was collected on the 18th of August already. clearly there system is not working they dont know what they are doing. Now i have to pay penalties on my bank account as they want to debit my account for something I didnt even use !! as I installed Fibre on the 30th of July! So what must i do now this seems to be a regular thing as i see alot of complaint about moneys being deducted and services not cancelled!