Bad Customer service

I took up a contract at the branch on 07/08/2020 I went back to cancel it on 11/08/2020 which was the next business day, I got the shock of my life when I was told basically that I will have to pay R800 for cancelation fees and the price of the router which is R40x24 after that I questioned what should I expect on terms of the first debit that was supposed to go off on 25/08/2020 I was told that my case is a complicated one a case has been logged and I will be contacted within 5 days to date I have had no correspondence from telkom I take it i should accept whatever charge is levied on my account on 25/08/2020. I'm so irritated by this situation because i feel deprived off my rights as a consumer and feel that at telkom mercy with my account, it so horrible