Faulty Product

I ordered a Sealy bed from homechoice a few months ago however the matress was too high as i was pregnant at the time and asked for an exchange.the bed was replaced by a restonic however the matress was flat and the springs were making a noise.i again asked for an exchange and i received a different matress which is now worse than the first 2.after a few weeks of use the springs is flat.i cant sit on edge with baby it sinks in on all sides.if i sit in one corner the bed lifts up on the other end. It is really uncomfortable n i feel its a waste of money.also the staff at customer service has no clue how to deal with complaints they keep on saying someone will get back to me.who is this someone?