Incorrecr arrears

I have been battling with Vodacom to fix my billing from November and no shame they just don't know what they are doing. I have been billed for auto data that I did not get and I was told that I was refunded R85 and in January my bill still included the amount for the auto data 711.and then it was reduced to 624 which still included the R75 for the auto data so I paid less the auto data I did nit receive on my January bill.they have been harassing me saying I owe R176.54. Today I called them and I spoke to Zikhona who told me that I owe the money as charges on the debit orderthat I reversed. I was told that the R176 54 is the bank charges for reversing the debit order. My invoice on the vodacom app and the information these agents are confirming are 2 different things. The app shows the correct information a refund of R85 and a refund of 100 making my bill for this month R609 which is totally correct,I agree with the app. Now Zikhona and her bank charges of R176.54 can go fly a kite because that's absolutely absurd I DO NOT OWE vodacom. Can you please cancel my debit order I will make an eft payment till the end of my contract in December.I