Low quality bed

I'm very disappointed with the bed I purchased at the store. I first bought a mattress only as my base was still in a good condition barely 2 months the mattress was saggy and would feel wet when we lift it up. We complained to the store and asked for another mattress or refund. We were assisted to choose another bed and the manager advised us to choose the mattress that's complete with base as he suggested that maybe our old base is not good for the mattress we bought previously . Ok we were convinced but I regret it as the base is made out of cheap box like board, my God it's not strong at all not to mention the mattress it's a disaster it's sagging and has hollows this bed doesn't even have a year. The beds quality is questionable really I would like to get my refund as this is the 2nd time I'm not happy.