Alberton Mobile Mechanic a no no

Good day. I don't know where to start but to make a long story short. During the 2nd half of last year we sell 2 Jeep Grand Cherokees to 24/7 Auto at a amount of R10 000. Agreement was that a amount will be paid into our account at the end of each month and when settled we will organize delivery of the paperwork. People don't even use this guy as a mechanic. He paid a small amount of the money and now if we call to only find out when the next payment will be made, he is speaking and swearing to us in a very bad manner. He called himself a christian, one of the very first things he told us when we med him. He is a ***** who refuse to pay the rest of the money into our account, we went to the police station and open up a ***** case against him. Please people be very careful he is a **** an definitively not the gentleman he was at first.