I've had a somewhat similar experience, both a HSW and some of the other properties ... its pretty rare I have to say, if it were common I'd have stopped staying at Hilton a long time ago. The worst offending hotels for this stuff seem to be those that are newly staffed (or opened) and/or have inexperienced staff. My last stay at HSW I barely recognised anyone, all the faces were fresh, and I got an idea, as I discussed a service failure, that the staff at that time were _extremely_ inexperienced, one of the staffers I spoke with near the front desk didn't seem to know, or understand, what a 'turndown' was (for example).
I used to mention service failures and then leave them to it, but nowadays I tend to follow up, so, if I've asked for a room clean, and I go out, when I return I'll ask how that clean went when I come back past the front desk. If theres been no action then there really isn't much choice but to call in the duty manager ... its the best way in my view ... gives the hotel a good solid view that they have a problem and pretty much 100% of the time gets your problem fixed immediately.
Basically ... complain long and loud hehehe, until things are as they should be