Poor service

I have taken an MTN R249 month to month contract on wednsday the 25th of April 2023 the Sales guy by the name of Carl Pillay assisted me & as it was an online communication he had asked that I pay Proratta of R298.00 with thier paygate so that the router to be released for delivery to my destination and he also mentioned that the amount was the once off Proratta payment beside the R249 monthly payment The router reached my destination on Friday with no internet activated I v called everyday since to be assisted with the internet activation & on Monday the 1st of May receive the invoice that say Proratta & monthly contract payment I due on the 4th I v called everyday from then of which they sent me to different departments from Billing,contract,Sales and to technical discoverage departments everyday from the first internet was only activated on Wednesday the 3rd , as I am sending this review R522.90 has been debited from my account which is that Proratta incl the monthly contract payment, Have sent the prove of payments to Betty Mangoedi, Nokuthula ngubane & Sinovuyo from Billing dpt also ask Hendry from Sales to assist as she said she s in a senior post , I need and advise since this Billing issue is getting difficult to be sorted and wondering 🤔 this won't repeat itself in future (hidden cost)