Cowboy Window Cleaning

I was given a verbal estimate and he talked me into trimming other trees. He came and started working, but not on the main project, so I thought he was just doing this other one first. Suddenly he says he is done for the day and expects me to pay more than he had quoted me to do the entire yard! I should never have paid him. He talks a good game and makes it like he's doing you a huge favor and that you are getting this great deal. Before, he came to do the work for me, I referred him to a friend. She had an emergency where a tree was about to fall on her house. Unfortunately, my and my friend's work was scheduled the same day and we didn't get to communicate or I would have obviously canceled on him. He gave her a written quote and then showed up the next day to do it and decides he wants more money. She felt no choice but to agree because the tree was going to fall any time. He leaves and he never even tells her. She calls him up and he basically admits that he just decided he didn't want to do the job and it left her in a horrible position because that night the tree came so close to falling on her house! RUN from this guy!!! Extremely unprofessional and does honor agreements. He tries to get more money out of you after he quotes you and you accept.