Just want to get my money back

Hi have bought a bennett Readee vacuum cleaner after buying product could immidiately see the product is very week with vacuum. Took it back to Game 16 days after i bought product. They said they cant give my money back and showed me how to put the filter in. I thought let me try again. Well it didnt work. So i took it back the sucktion it to poor. Game send it to supplier. 3 weeks after i recieved it back saying it was serviced and filters were cleaned. Well still the vacuum suction is so poor. I do not want this product. I want to get my money back and buy a proper vacuum. Pls assist with my problem. My nr is ***