Help – Wrong ticket, what to do?

Hi, I got a Stafzettel yesterday (too fast inside), on which neither I can be seen, nor anyone from my fault/knownness. The thing is, on the picture is what of a Volkswagen with license plate “ABC XY 123”, and I have “ABC ZZ 234” (license plate edited by boborola) What should I do now? Because there is something on it that I should fill out the letter. (but I am not at all guilty, because the leader of the flashed vehicle is supposed to be gs be registered.. I don’t know) In addition, the letter should be sent 1 week after entry. I work in the retail trade, and God doesn’t really know this week the time to run to the post office, because I work Christmas and after the holidays from morning to evening. (silence then, that the post office has at all on) Ask for help, what should I do? Mfg Lupopappe