MY NAME IS DONALD BARRETT, I PURCHASED A SERTA QUEEN SIZE MATTRESS SEPT.2007.PAID BY CHECK 867.99.THE MATTRESS IS SAGGING IN THE MIDDLE, AND IS COMING APART FROM THE EDGE .IT IS ALMOST IMPOSSIBLE TO GET OUT OF THE BED.I HAVE A 10 YEAR WARRANTY ON THIS MATTRESS.PLEASE ADVISE ME WHAT THE NEXT STEP IS TO CORRECTING THIS PROBLEM.I SPKE WITH THE SALESMAN AT MATTRESS WAREHOUSE.HE SAID WE HAD TO EMAIL YOU.PLEASE EMAIL ME AS TO WHEN THIS PROBLEM WILL BE TAKEN CARE OF.. read full review »