terrible customer service

I lodged a complaint 10 days ago with telkom mobile and the only communication I have had back from then was one voice message to say they couldn't get hold of me. I called back and stated my phone was on and if they couldn't get hold of me telephonically they could email me. They never did. Then yesterday I called again and the call centre agent said a manager will get back to keep in 45 minutes wich was by about 13:30 via cell if not then via email. It's over a day later and still nothing. 10 days and no communication is shocking. not to mention my last case I lodged they also never got back to me despite having all my contact details.