Dell Are Scammers

My alienware aurora r9 computer can only function with one ram stick of 8GB. Dell are actual scammers and i have bought 2 ram sticks one of which is the same exact ram stick that dell put in the computer and it STILL DOESN'T WORK. The computer has a ram memory problem and can only run with one stick of ram. Trash, garbage system. Dell sucks. I want my money back for a flawed system.