Sears sold me a defective adjustable bed, which didnt work from day one, then it fell apart and they refuse to help

I purchased an adjustable bed frame from Sears. On the day it was delivered, it didnt work. I was told it didnt work because my mattress wasnt compatible, so I ended up buying a new mattress also. When the new mattress was delivered, the frame still didnt work and again the delivery person said it was a problem with the mattress. Five minutes after they left, the entire motor assembly fell on the floor.

Sears has refused to replace the frame, even though its been less than 3 weeks. They phone calls get transferred from dept to dept, and now I'm told I should have reported it within 24 hrs. I told them that I did report it to the delivery person that day, but becuse he didnt report it on a log, Sears says I'm stuck with a non working brand new $1500 bed. They referred me to the manufacturer, who says it was installed improperly and that its Sears problem.