He doesn’t want pay the rest for the sex service I gave him. Who in the right. ?

Please don’t judge. Is been a year ago since I started sexual services to some clients i know. There’s been this guy that always come for my service. I always go to his house but this time he wanted me to host but I couldn’t. He had family over and that’s why he couldn’t have me over. He then asked if we could have sex car. I agree to it and so we went to the beach at night and started having there but we was having a difficult time doing it there so we got back to his car and drove around ( almost an hour of driving ) we couldn’t find no spots so we went back to city. ( we drove out the city ). He then said let’s meet up this day and I agree and I told him. May I have half of the money now. . He said yes. So that was that. Unfortunately I couldn’t see him the day we agree on because of my work schedule. So 2 weeks has went by and we haven’t match schedules. So I text him asking him that is only fair he sends me the rest which is only 100 left. And he said no. But he gets upset when I’m working and can match his schedule
He doesn’t want pay the rest for the sex service I gave him. Who in the right. ?
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