Model : ME83X S/N : 0C3W7WDW900200H

I bought a microwave warming for just 3 days at Builders Express Thohoyandou. I brought it back to the store and builders couldn’t refund me or exchange and contacted Samsung. Samsung said Builders should send the microwave to Polokwane for technicians to look in to it, when I call Samsung call centre I was told the technician as going to Thohoyandou to check the microwave. I am sitting for two weeks now without a microwave which is siting at Builders. Builders and Samsung are playing games with me. I get different updates from both of them. Now builders is saying they sent the microwave to Polokwane and the microwave needs a new part which has been ordered, how can a new product work for three days need a new part? That means it was dispatched with a factory fault.