How do guests complain about hotel towels?

If there is any problem, be willing to deal with it, and don't deny it in a hurry, which will give other guests a feeling that there is no money here. Now there is a kind of crisis marketing, which may also be an opportunity. Hair wrapped around a towel is not easy to wash off. The waiter should take off the towel when sorting it, so that this problem won't happen again? Dujih