Accounts ***** up I suffer

I spoke to a call centre agent and got told according to their system I was suppose to be credited on the 18th of December but instead of that happening they added that aount to my bill. My account got suspended on the 24th of January 2018. I have been in contact with the call centres nearly everyday since the 24th. All the agents take about 30mins to read the notes to try to make sense of the matter. They all say that up until November my account has been up to date. The problem lies with accounts. So today the 31st Telkom decided to double bill me. Not only did they do that but they still never unsuspended my account. In a nutshell Telkom has disgusting service. If there is a problem you can't deal with anyone who has authorisation to fix problems that is not the customers fault. A week later and problem still not resolved.