Terry is a jerk
Who in the world thought it’d be a good idea to make a professional house painter mad? Terry, that’s who. According to the OP, Terry hired a pro painter to cover his home in a fresh coat of paint. However, after finishing the entire project, Terry had no intentions of forking over the money he owed.
So, this pro painter did what he did best: paint. He scribbled on Terry’s wall how he didn’t settle the bill. Terry totes got what he deserved. Don’t be like Terry people. If you don’t want to pay a professional, then do it yourself.