Claim to repair your machine but steal your money

A terrible service from the Appliance doctor. I contacted them to fix my washing machine on the 20th December after it was displaying an F08 error. I explained to the technician that arrived on the 22nd that it was a heat element error. He changed the pump, quoted me for the pump. Then left to fetch a heat element. He then returned to “replace” the heat element. Once finished he had now added the heat element to the invoice without quoting. I said ok to pay and promptly paid IN FULL R3300. I asked him if the machine was in working order and working 100% fine he confirmed this. My stupidity. After he left I did a load of washing the error reappeared. I contacted him immediately. He said to restart it. I did and he said he would send a technician. Here I am on the 28th and the washing machine is still not working. I have sent him photos of the error twice a day to a repair se this morning of I need to wait until next week. I have paid this company in full and they are unwilling to assist. They claim to repair your machines, which is a lie and take your money. Do not use this company they are not honest.