Appliances Repairs Johannesburg

I googled for a Samsung accreditor dealer repair company and found the first one to be Appliances Repairs 011 568 3757. Nina answered and sent a technician Evans out to have a look. Evans told me that the Inverter PC Board needs to be replaced. Gave me the number of a place to buy the Inverter PC which I did. Evans came to install and I paid him R1450 and the part cost R1450.00. After my 3rd wash the machine blew out, Evans came again and said the Inverter PC Board has blown. This was from the 11/3 till today and my washing machine is still not working. I keep call Nina to ask if I can have my money back and nothing gets done. This is a very bad service as Evans did not install my PV Board correctly. I want my money back to get someone else to fix my washing machine and they are not responding to my request at all.