Disgusting disregard for customers

I bought a Samsung 32L microwave online, delivered 10th March, on the 11th April i had to take it in to Game Festival mall as it stopped working. Apart from the lady at the desk being incredibly uninterested in assisting, they advised me 21 working days for repair....firstly that's longer than I actually owned the microwave, Secondly the microwave is brand new, I don't want a repaired microwave. The Monday morning I phoned Samsung, they advised the microwave must be an assess and exchange, phoned Game repair centre and advised them of this and they said it will be a week. Tuesday 22nd April I called to get feedback, the guy told me he will call the supplier to get feedback and call me back, of course I received no feedback. I have been trying to call them now yesterday and today but nobody even answers the phone!! This is the most disgusting customer service I have ever experienced and I will NEVER buy another product from Game ever again. I want my microwave!!!!