It's not about nastiness perse i think. Some of the most difficult clients are the richest or could be just freeloaders. Some require exceptional service and

It's not about nastiness perse i think. Some of the most difficult clients are the richest or could be just freeloaders. Some require exceptional service and immediate response times and are willing to pay for it. Some want to use their behavior to pay less and blame it on you. It's very hard to filter out between those two.