One of my clients did not pay the entire bill, she sent me only $100 dollars. The bill was $345, she sent me a note saying that she was not satisfyed with our job ( excuses... excuses) and that she had to hire someone else so she will not pay more than that. I know that is not true. Her yard never looked so beautiful before. She is making excuses. ( of course she canceled on us). And she sent $100 because I sent her a second bill saying that her account was overdue and if not payment is not received we will charge late fees. What should I do? Can someone help me write a letter please?