Telkom fibre

I placed an order for Telkom 40/20 Fibre speed. Telkom sales call center from Cpt phoned me before I could receive this package. They offered me the 75/50 at the promotional price as a new Fibre customer. I phoned in & canceled the 40/20 Fibre speed. Liw &. behold, the back office went and canceled the 75/50package & sent me the router with the 40/20 speed. I had a technician try to sort it whilst he was working from home. He confirmed all sorted. Only to find that what he promised was sorted out. &. the speed tests I did for 2 weeks after this still revealed that I had the 40/20 package. I phoned Telkom again to cancel the complete Fibre package, as they now refused to give me the 75/50 speed Fibre package as a new customer. I was asked to take the router to any Telkom store, if I wanted to cancel the Fibre package, which I duly did during the same month (October 2023).I then get an email, stating that Telkom will do a debit order on my bank account for the end of November 2023 for R584, which I did not authorised. Where to next with Telkom Fibre ?