I complained to management that I suspected the vehicle had been used for a joy-ride.
This was refuted by an explanation that the passenger seat would be moved to access components under the footwell, that the Technician never carries a passenger for a road test (no road test was indicated in the invoice details), and that the tilted seat would probably have been done during the post-service valeting.
I can imagine the seat being moved for access into the footwell, but this would be by shifting it backwards on its rails. And I cannot envisage a valet tilting the front passenger seat back or dropping the armrests.
Although remaining sceptical about what truly occurred,I did concede defeat to the service manager as I wish to move on from this argument, but I did advise him that, being retired, it would be no problem for me to bring a book and keep an eye on the situation - reception seats are quite comfortable, refreshments are freely available, and any movement in or out between the service dept and the public highway is visible through the reception window. The manager accepted that i could do this. What else can I do to tighten up discipline? Moving to another service garage is not a viable option.