Bad service, being billed for something i dont know.

I sign up for a contract with telkom online in April 2024 i recieved my simcard in May 2024 and started my subscribtion in June 2024 which admin fee and subscription fee total to R204 and my subscription is R105 a month for 20Gb anytime and 20Gb night suffer than in July the debited my normal subscription of R105 and in August that where the problem start when i recieved a text starting that end of August my subscription is R320 i dont know for what i paid it while i dont even recieve an invoice so in September again i got a text says i need to pay R195 i dont know for what i called telkom call center than the agent who answered the call said she sees that on my profile so she is gonna unsubscribe for to those things that are billing and she told me she cancelled them and i told her i dont even recieve inboice via email she than said she is gomna update my email than again i called the following week i got a guy on the line i told him my problem his answer was "i dont know sisi apparently you are not only one complaining about actually this started in August and customers promised by telkom that they gonna get their money back in the beginning of september to their bank accounts not on their Telkom accoumt but still no one recieved their money back i am sorry but there is nothing we can do as agents because we dont know what happening we been told that there is Telkomplus that is billing customers money and they gonna sort it out but we dont know when so i have nothing to say beside saying sorry, TELKOM SORRY DOES NOT BRING MY MONEY BACK I WANT MY MONEY BACK now i got an invoice saying month end due is R307 i dont know for what so now i am gonna cancel the debit order Telkom will have to pay my money back before they get money from me.