Unauthorised deduction and shoddy service

I have household and car insurance. I was waiting to take delivery of a new car and notified Outsurance of the details of the new car, so that when I took delivery i just needed to call in. Last week a deduction went off my account and I was told that Outsurance had uninsured my car (not on my instruction). I was told to take the car in to be inspected again as I was now reinsuring the car. When I called today after an amount was deducted on ( 9 November, I was told what amount will go off at the end of the month. The amount has suddenly increased from last month! I'm not impressed with this shoddiness.