I bring my company car there for maintenance and b...

I bring my company car there for maintenance and body repair, it is a white C3 with plate 13. I am going to withdraw it, we complain with me that it is too close to the 'closing time (I work too, sometimes ...), but they want to give me the vehicle. First, I am asked "how much should you pay?", As if it was up to me to know. Then I get out a car: a gray C3 with a 75 plate. I say it's not mine, we insist that it is. It takes a good half hour to find it, going through the stage "maybe we are mistaken, we will have to come back". During the following week, I get arched by the accountant, because "we can't find your payment check". I insist that I have the invoice and that I would not pay a second time. At the end the check was "on the side".
Really not serious.