Unauthirised testing withdrawals by Cell c

I signed up for a R249 50GB cell c package on the 16th April 2021 with their call center and was told I will be paying a pro rata amount at the end of April and there will not any charges required. On the 19th two days after activation a debit order went off my account for R179 and I called and they said it's a test debit order. As shocked as I was , I asked why does it have to include a withdrawal without my authorization. Couldn't get a clear answer, I then reversed the amount, minutes later another debit order went off for R340 which is extremely above the package.At this moment I was do angry as these are unauthorized charges and they are outside the terms of the contract. Made a call and was told it's a mistake and it will be resolved. Fast forward, the prorata amount never got invoiced in April, and in May R616 was scheduled for withdrawal from my account. With all the calls i made and the many 48hrs I was told about to resolved my issue, cell c has now came back with an sms ehich reads: Dear Cell C customer, please receive feedback for case no. ***

Please advice SN-*** - Test debit cannot be refunded which means the bill cant change and that amount was an once of payment which the original bill will be paid as the difference.

Should you have any further queries, please contact us on *** or 135.

Given that cell c is failing to resolve this matter I hereby request to pay for what I have used thus far on the R249 package I signed up and cancellation to prevail.