Getting Ridiculous

i received the following email "In terms of the vehicle credit agreement you have with Standard Bank Vehicle and Assets Finance, you must have comprehensive insurance on your ******x for the entire finance period". What the hell i have a copy of the contract and i know i'm suppose to have insurance and why are you asking me this. As a prestige client i'm applaud because firstly what reason do you have to suspect that i might not have insurance as i have never ever skipped bond payment or car payment and secondly there are insurance payments going of from my standard bank account monthly do you think this is for a boat that i own. Please find your prove attached. This seems desperate and if this is the case i'm no longer going for standard bank car finance. I've been with different finance providers and this is the first time I've been asked to provide proof. If you wanted proof why did you not just phone the insurance since i did provide you a copy as the insurance when i collected the from the dealership.