Silly driver that deliberately overcharge customers

Hi my son requested a drive from lebohang lawrence 20 August 2022 @18:04 the price we were suppose to pay was 35 rands I give him 85rands by mistake because my son went out of the car he gives me 35rands back and takes the 50rands.its not a matter that we didn't have change or anything he deliberately took extra cash for himself. We phone him back he **** and said he is coming back and when we phoned again he dropped our calls.