Terrbile Telkom service

I have a business account with Telkom. When it was initially taken out there was a mistake in the surname of the person who took the account out being displayed on the statements. This was never corrected. I took over the business and have been trying to get Telkom to transfer the account over to me for quite some time now. I have sent through the previous owners ID, I do not know why Telkom does not action the transfer to my name. It has really been a nightmare dealing with the Telkom call center. I am constantly told to send a email, but the changes are never made. It's been years now.