Webafrica refuses to communicate and bills anyway

I recently had a payment dispute with Web Africa after cancelling my account with them regarding no service delivery and very little communication. I eventually managed to get a hold of a person called Kevin who kindly informed me that my account was cancelled and that every invoice would be credited. (I was not averse to paying for what I had used but refused to pay for something I never got/had to beg for) Regardless of this my account was still debited the full amount and after repeated attempts at trying to contact them with no response I am now forced to reverse the debit order and report the incedent to ICASA and the NCC.