This began in March. I purchased a mattress and was delivered in April.Was slept on 4 night. Began sagging and box springs squeaked every time you moved. Replaced with same type (did the same) SAGGING. Third replace last of May same brand different style. It does not matter what style they are products the same. This one now is sagging that I have to slept from corner to corner. Flipped, turned mattress still the same. I have not had a decent nites sleep. My health is in jeopardy.HELP HELP HELP. I cannot afford to purchase another one. I would like to have my (846.00) money back (refund) and go elsewhere and different manufacture.