my wife Angelita and I purchased a Dan ford PS euro top mattress for 399.99 dollars on 06/01/2010. Now it has a sink hole causing restless nights and backaches. It has not even been a year. Refund or exchange for a better mattress would be deeply appreciated. I know you stand by your name. May not be able to tell from pictures but there is a sink hole and we tried to pad it and with several types of padding.