Complaint - Vodacom

I am extremely dissapointed with Vodacom. I have had a pending query since 14th October and I have not been successfully able to get it resolved. Every time I call the customer care line, theibe drops as they answer. I have sent numerous emails in which I get very little response to. My line has now been disabled despite me paying my monthly bill. The query in question is charges from a third party that were billed to my account. I have received confirmation from the said third party that these amounts are credited and have provided proof to Vodacom of this but yet still cannot get the query resolved. HOW CAN A LEADING CONNECTIVITY COMPANY NOT HAVE THE MEANS TO EFFECTIVELY ANSWER CALLS FROM THEIR CUSTOMER CARE LINE????