MTN Home Wi-Fi R269.

I subscribed for the MTN R269 home wifi on the 25th of July 2024 which I paid Pro-rata and a full month subscription (R329.74) as advised by the agent on the phone and I was advised that I will pay on September 4th as it is a debit date I chose I paid for August to my surprise I am being debited R546 on the 6th of august which was never the agreement I reversed the amount as I was not informed of this when I took this deal. (No invoice was sent to me but they are debiting me without my consent) I would have never taken it if I knew it was a ******* from MTN. I called the call centre several times they took me from pillar to post and put me on hold forever they don't even know why they are charging me that amount on top of that they delivered the router late on the 29th and they activated the sim card after 3 days after receipt of the package but I was charged pro-rata for those days. I don't even have a month or 2 weeks with them they claiming that I owe them R546 how is that possible??? Now they have suspended my wifi/account which I paid for. This is the most appalling service ever I sent them proof of payment on 08/08/2024 still nothing has been done but they are quick in suspending my account. Terrible service! **** on another level opting for cancelling this service. How is it possible for one to pay R875,74 in total for a service of R269?