Worst Service Ever and put in wrong parts

18/09/2015 Lionel came to fix my fridge which was not getting cold. (Freezer working fine). He charged me R550 to replace 2 relays on the compressor. The fridge worked for 3 days. Contacted Lionel who said I need to replace the compressor and it would cost R900 to fit new compressor and thermostat. 25/09/2015 the compressor was replaced (but not the thermostat). The fridge worked fine till about 23/12/2015. Contacted Lionel 3/01/2016 and he said he would come out. He came 3 weeks later and said that the thermostat damaged the compressor. It would cost another R450 to fit new compressor (still under garantee) and thermostat. He finally came 13/02/2015 to do this. This time both fridge and freezer was not working. When he finally came out to look at the problem he was adamant there was no problem on his side and eventually blamed it on the gas. Freezer working fridge not working because I found out that the thermostat he put cannot work in my fridge and I specifically asked him if he replaced the correct thermostat which he said yes. Fridge not working and cannot get hold of him, he does not answer my calls. Sms him to tell him the wrong thermostat is causing the problem, no answer.