1 . He puts the demands uncleanly, and then accuses the wrongly done project.
2nd For the poor payment will require you more times and a lot of additional tasks, about the paid routes you can forget with it.
Three The disrespect of the executor and the misunderstanding of the value of work and time.
The result: if you’re not lucky to meet this customer, take the mother’s payment on the card ahead, and it’s better to avoid working with him, because there are professionals with whom you work, and there are diletants like this individual.