Rude game store employees.

0 customer service. Bought a raleigh mountain bicycle, sales man on the floor not willing to assist, had to ask for the manager.. Once I've made the purchase and asked for the bicycle to be assembled the sales man said he can't he's going home now. The attitude was not customer friendly. One month later the bicycle chain and 'motor' part failed. I took it to back to the store and now I have to pay before they even do the repairs.. How is that possible?