Quering Vodacom Red hot dealz

Good day can I please have assistance regarding my vodacom contract 27 Jan 20 I was billed R270 over what I normally pay when I enquire to the billing department they tell me its the red hot deals and its recurring problem is I was thinking I was buying data now im in sort of like contract, without any agreement, knowledge, explanation, u jst click red hot deals then accept thats it, I feel that is so unfair to us as your customers vodacom knows each service we purchase there should be explanation and clarification we need to buy something we are quite aware of, worse now I have cancelled it but Vodacom still sent that 2Gb I dont want it I'm sure its waiting to bill me again next month. Contact me on *** email *** I'm looking forward to your response.