Rodger - you provide a service of reporting what comes across the scanner. What you should not do is extrapolate data from that information. When you do, you look foolish. You extrapolate a lot and tend to go to the worst angle. I am not sure why you do this. Any thing I think of would be a GUESS.
I mentioned that this complex has more than one occupant in the apartment. It would not be uncommon for a tenant to let the guy in and have him do work and then left. Heck, for all we know, the tenant could have approved of the shower. If that tenant didn't tell the other person(s) who lived there what was going on, you could imagine the shock of the tenant who walked in.
"The only kind of people I know of who get offended by calls like this are offenders themselves." Wrong again. The people who get offended are people who think you are judging without facts, only bias.