Telkom ridiculously poor service.

I have honestly had the worst experience with Telkom. The lack of coordination, the poor service, and the inability to resolve any issue is appalling. We had a business telephone and linked wifi account with Telkom, and when we sold the business in January, the new owners began a process of transferring the account. What is completely confusing to me is the fact that we are still receiving statements from Telkom for an account taken over from the beginning of February, and the new owners are also receiving statements for the same account. How is it possible that two different parties receive different statements for the same account? We have visited Telkom branches multiple times since February and there has been no assistance whatsoever. How are we still being billed for an account we are not even using? If I could provide a negative rating I would. This is honestly the worst service we have ever received.