Complex sentence: At first, Dean puts up with Joanna's rude and demanding attitude; however, when she refuses to pay because she dislikes the type of wood he used, he demands payment and then she shoves him overboard along with his tools.
Split into simpler sentences: At first, Dean puts up with Joanna's rude and demanding attitude. However, when she refuses to pay because she doesn't approve of the type of wood he used, he demands payment and then she shoves him overboard along with his tools.