Very Unhappy with Bradlows Alberton

I bought a Sealy bed last year October. The bed started to drop in just two weeks after buying it. We complained to the store. They escalated to Sealy.. The reps from Sealy came checked the bed and said this new Sealy beds they need to be rotated every three weeks. They exchanged the bed we got a new bed. Since last year October I been rotating the bed and the mattress is still dropping inside,the mattress looks like we had that bed for more than five years, and it's just a year we had that bed. Last week I went to complain that the rotation it did not work The manager she told me she will escalate and I will get a call from Sealy and it's been two weeks since I complained.... No calls from Bradlows or Sealy. I'm not happy with Bradlows service.... After I bought a bed for R7500... I see they think this is a joke. I'm very unhappy.