I booked my car in for a service and MOT online and dropped it off 15 minutes before my 1hr 30 min slot, as requested.
I was asked if I was waiting in the viewing area or coming back, so I automatically said I'd come back for it (but because I was having a nosey around the retail park, not because I had alternative transport to get home and return later in the day).
I was told I was 'looking at three/three and half hours' and that they'd ring me nearer the time.
I said, 'no, I've booked the express service; won't it be done by...?'
After more conversation, it turned out they were short staffed at short notice due to religious observance and running behind. I guess he was figuring out who it made no difference to to leave their car for the rest of the day, so all bookings were completed.
Mine was done in just over the time expected and I recounted this to DH when I called him, as I was a little later than expected in getting away.
Apparently it's confrontational to say what I did and I'm lucky the guy decided to back down, as this is why I 'always get into arguments'.