Very annoyed customer

I went to game and bought a Hoover vacuum cleaner, I just started to use it it and it states to make a stange noise and smelled like it was going to burn out. So I took it back. I got to refunds and exchanged and they called a consultant to cone assist and test it. The guys they assisted said it's a factory's fault. But refused to exchanged it, they didn't tell me that booking it in. They just asked my name, cell and address. By now I was about 30 mins in the store so I went back to them and asked what is going on they then said that they booking it in.. I told them I do t want the nonsense because if it's just been bought it's going to keep giving problems. I requested to talk to the manager. They first tried phoning him and they couldn't get hold of him. Then the pages him. By now I was hot and very annoyed at the extream poor service of not telling me what's going on, 20 mins later he came walking on his time. He did not greet at all, he then said that it must get booked in. After I told him I want a refund because it's not good, he refused me. And told me it takes 21 days. I don't want the junk I want a refund so I can go else where. The staff are to tired to help , they dont greet and by giving u a service they doing you a favor. That place is a joke. I WANT A REDUND NOT FOR IT TO BE FIXED OR EXCHANGED. What makes it 10 times worse is my partner is blind, he can't handle the heat due to his condition and suffered from extream sinus and I really needed the vacuum clear. My partner was with me at the time and they where not even bothered to assist I feel they *****ing from a blind person as no refund !!! I was so angry and annoyed at the manager I walked out.. game should employ people that want to work, and don't feel forced to be there.