They only replace towels, washcloths that are not hanging up on the towel bars. In other words, be sure to have your towels on the floor, in the tub, etc., so they know you want them replaced.
I have only had one issue with T & T or housekeeping in 22 years as a member. ONLY one.
And that was when I had requested a full cleaning in a GV on our T & T day. Apparently the request, which I did make late(called the morning of T & T), did not get to the housekeeping staff as we came back that afternoon to no cleaned GV, and even the T & T hadn't been done properly. The reason it really ticked me off was that we had left a total of a $30 cash tip because we were expecting the full clean we had requested. The person that did the crappy T & T had actually had the nerve to take the tips!! Up side is that I immediately reported this, and very quickly got a call from a housekeeping supervisor, who apologized profusely, promised this CM would be properly coached, and gave us a full cleaning later for no charge. They made my one-time issue right.