WHIRLPOOL IS USELESS

In 2012 I bought 8 appliances from Whirlpool. My oven stopped working in Januarie 2015.<br> I phoned Whirlpool and they said its out of guarantee, its a R400 call out fee. I agreed to pay they should send a technician. On the 6th of Feb a technician send a text asking 'can we attend to the oven', he came out and said its the fan. He returned on the 9th of Feb with a new fan, installed it and I paid R450 for it. He left and a few minutes after the oven stopped working again. I immediately phone him and he came back. The oven was to hot for him to check so he left saying he will return the next day, but never did. I phoned him but he did not take my call, I send him a text but he did not reply, I then phoned Whirlpool and complaint about the service, Melissa took the call and apologised saying HE will keep me up to date, but they are waiting for a pc board. He send a text saying the pc is R1100.00, I said install it. Parts will arrive on the 16th he said. On the 16th I contacted him again, but he again said no stock. On the 23rd I asked again, still not stock. I've spend R41 000 to get bad service. NO OVEN FOR A MONTH. WHIRLPOOL'S SERVICE SUCKS AND NO AFTER SALES SERVICE!!!!!!