Worst quality of brands

I bought a Defy 6kg Air Vented Dryer Manhattan Grey from hifi corp, it was delivered and dented, after i have reported it being dented it took them 6 weeks to deliver a new dryer, i used the new dryer 4 times in 2 weeks now it sounds like it is falling apart or going to blow up any time. what are they selling, is this the quality of HIFI Corp, this is unadaptable, I have lost all faith in them and there products. Pls do not buy from them!!