I spent £800 on a posturtech superior mattress. Less than 18 months and rotating it on a monthly basis the mattress has two dips where me and my partner lay. Customer services told me to call an independent company called homeserve. Who would call and inspect the mattress. This would cost £48 up front and if no fault was found to the mattress would not get this reimbursed by dreams. I'm not sure if I can be bothered with the stress of it to be honest. I thought dreams were the no.1 bed specialist...but I would never use them again they are dreadful. I thought I'd get at least 6/7 yrs out of the mattress! !