DON'T LINK YOUR SHOWMAX ACCOUNT TO TELKOM

I've signed up via Telkom to Showmax. They were supposed to send me a voucher code and I never received it. I inquired with their customer services and they can't assist me. I've been charged for Showmax on my bill for over a year. Each time I try and cancel it, Telkom sends me to Showmax but Showmax says I'm not on their system at all. It's been back and forth for over a year. I've been paying for a service I cant even enjoy and I cant stop it either. If I return the debit order it will reflect negatively on my credit score. Telkom has been extremely unhelpful. They are quick to link accounts and start billing you but when something goes wrong they simply don't care. I just want to stop paying for this service and I don't want it anymore. If only someone from Telkom actually returned my "Call back" requests, but that doesn't happen either.