Selling false packages to clients! Pathetic service

On 13 December 2024, I have contacted DSTV call centre and was offered the following service, Compact+, Disney+,Showmax for R590. I added extra view for R120 which amounts to R710. In order for me to have this price, a debit order needed to be done which I gladly accepted. On 31 December my account was in credit of R69.89, taking into consideration I am in credit, the amount I needed to pay was R650. A debit of R730 went off my account and declined as I only leave enough money for the debit order. When checking my app, the amount outstanding showed R1598 and changes daily. I have asked what is the amount owing and was told accounts department will contact me in 3 hours, a week later no contact and services suspended. I called again to be told that the total amount I need to pay is R799 for all the services and there is no such contract for R590. How can your sales persons sell products to clients which are incorrect? I was this matter would be investigated and services restored. Services were restored for 3 hours and no feedback on the outcome of an investigation.