The amount that you ultimately will have to pay for the storage and towing of your vehicle is the invoice that the towing and storage company sends you for the services it rendered with respect to your car assuming the receipt that you initially received was not provided to you by the towing company.What you should do is contact the towing and storgage comapny immediately about the discrepancy between the initial receipt that you received and the apparent different existing charges from what are stated on the receipt and see what can be done to resolve the situation.The problem is that you will not be able to get your vehicle out of storage until you pay the amount that the storage company deems is appropriate for the towing and storage of your vehicle.