Audi fiance wesbank *******s

I am very disappointed in the way audi finance and wesbank rip people off. My debit order has been deducted wit 1500 from audi finance( wesbank) because they claim I dont have car insurance. I give audi proof every single time they ask for proof but still who is audi or wesbank to do this to people. Surely by law this is not allowed. I asked for the agreement which they claim I signed to see where it says this in my contract to this day I dont have it. I am waiting for my 1500 rand to be refunded and wesbank does nothing to refund me. A lady by the name of Alldene jaar said she would assist. To this day she did nothing right. Please can some sort this out n refund me.