Vodapay advance voucher not deducted since August

I bought a R100 advance food voucher in August, the payment was not deducted and I contacted Vodapay to inform them several times and now they are adding interest of R30 for it not being paid. They also told me TymeBank is not supported but R1 was deducted to authenticate my card. I have added Std bank, fnb card as a back up and was advised to add money to my vodapay wallet for the R100 to be deducted and still nothing was deducted. It seems that Vodacom wants to charge interest. There is no way to do eft payment and even if you change your card they dont deduct it. To my knowledge everyone that assisted me via chat has not logged a service request which makes me think they want clients to pay interest. I do not recommended Vodapay to anyone. I now have to Pay R130 instead of R100 when I asked for assistance in August when the amount was not deducted. I have livid!!!