MFC/Innovation group stole my Money

I was contacted by a consulted on the 2nd of may 2018 offering me MFC service plan and I said yes to the quote but after discovering that that the plan is only valid for months but I'll be liable to pay for the plan until I finish my car installment I then called MFC on Monday on the 7th asking to cancell before they could start debit my account. 3 days later I received documents for the plan I called them to find out what's happening because I cancelled the MFC service plan. I've noticed today that my car installment changed from R2674.52 to R2877.28. Where does the R202.76 come from. I need this money refunded back into my account ASAP please. I'm not happy with companies that takes money unauthorised it's very unprofessional. I need my money or I'll reverse the debit order so that they can the debit the correct amount because that's not what I signed for with MFC.