Regretting the data sim card

On 26 May 2025, I got a call from Vodacom being offered a data card, which I gladly accepted. It was then delivered on Thursday or Friday, but what a horrible experience it has been. I was billed so many times, claiming to be prorated and saying some excuse of being billed R299 for June, but upon agreement, my data was meant to start at the end of July, which I have on the invoice. I regret taking up that SIM card, honestly. From 26 June, when I logged a case, nothing has been done. Then their consultant calls and tells me they will credit the errors they made but want me to pay the end of June R299, which makes no sense because that SIM card was given to me at the end of May and activated at the beginning of June. Today I spoke to a lady by the name of Cindy or Sindi Mdluli. What a rude consultant who thinks we do not know how these things work! So when you are ready to attend to my matter in honesty and ethically. I would like to be assisted by someone with better reasoning and understanding because that R107.00 pro rata and R299 billed in June will not be paid by me. Thanks