Sometimes I despair of the human race. Friends of mine have a small B&B in the hills above us. They provide a homely service so the apartment has full drinks cabinet & honesty box for people to leave money.
A weathy couple of Realtors drank €38 & then left €6. When asked politely for the remaining balance response was...
"Write the balance off as a learning experience. Next time present a bill in a timely manner. Get yourself organized and focused."
Hangs head in disbelief!