Telkom SA's disgusting service and ********** behaviour

The service at Telkom is really Appaling and sickening. How difficult can it be to do right by a paying customer. I orderd a laptop online with telkom which upon arrival was defective, the mouse pad and keyboard pad were disfuntional. I returned the device which was within their 7 day grace period. I then called them to cancel the contract which they informed me they have done. They the refunded me the the amount which was debited from account for the devices as i no longer had it and didnt want the contract as i told them ill go get a device in store which i did. I am Currently being charged for two devices, one of which was supposedly cancelled. I am utterly disgusted by the fact that they told me they cancelled the first contract, they then refunded me my money to which they are now debiting my acvount again for something i dont have. No one at telkom can assist me as they keep saying they have cancelled but my account is still being debited. Now that i need the stupid contract cancelled and all my money refunded i have to go through a thousand consultants and not even one of them is competent enough to assist. How ********** can one company get.