Absolutely Frustrated

Last month I made various phone calls to try and sort out my account. I had actually cancelled my Internet Bundle more than once, yet I was getting billed. I refuse to pay that amount. I had made a complaint and up till now nobody has called me back. I am sick of this, even when I contacted the call centre, they couldn't seem to help me. Please, I'm sure i have a small amount due to Telkom which I am prepared to pay, but further than that, I am refusing to do so. Please contact me with my necessary information to close my account with you'll completely!