House & Home is bad news....

I bought a bike in the store for my brother that started to study in Potchefstroom. The bike was purchased on the 1 Feb. I returned the bike on 19 feb because the handles keeps going loose and the gears does not change. When we got to the store with the bike they did not know what is the return policy on a bike. The only thing they knew was the fact that if it happened with in 7 days they would of returned it. Its a week later and they still don't know what to do??? Really can one company be so pathetic not to know what there return policy on bike is??? I don't want my money back I just want a bike that works? Aparantly if you buy it at House & Home its to much to ask... I please want to ask people not to support them. Once they have your money there is no clued up after service.... really really annoyed! !!!!!!