Took my car in for oil change, tire rotation and 2...

Took my car in for oil change, tire rotation and 2 filters changed. I noticed the next day that the tires had not been touched. I distinctly remember the 2 tires on the drivers side had stem caps and two on the passenger side did not have stem caps. When I got my car back it was the same way as when I left it with them. So now I'm wondering if they did anything at all. I will NEVER take my car to Jim Burke for NOTHING. At this point I don't trust them.