Sleep Number Bed - Select Comfort Review

My husband and I purchased the I9 bed from Sleep Number on July 4th via their internet site.  We received the bed on July 17th via UPS shipping (we didn't want to pay the extra $150 for their people to set it up for us).  We set the bed up (exactly as directed) and began sleeping on it that night.  By the 2nd night I had a terrible neck and back ache and was not sleeping at all.  Our bed was the king size model and had separate air chambers inside of it.  Yet, every time my husband got into bed my side would overinflate and I felt as though I was laying on a huge air bubble.  We could set the air chamber to 40 and a few minutes later it would be at 55 or 25...it would just randomly change settings.  You felt as if you were laying inside of a hole or something...the foam sides and center stuck up more than the air chamber.  I cannot begin to tell you how uncomfortable this mattress was.  We were so miserable it was just unbelievable.  We contacted their customer service and  were told that we HAD TO keep the bed and TRY it for the FULL 30 days and then they would issue the RMA number to return it if we still weren't happy.  After our 3rd complaint to customer service we were finally given the RMA number to return the bed.  We opted to take it to UPS and return it ourselves...don't opt for that option it cost us almost $500 to return it!!!!!  We are SO displeased with this product and the fact that it was NOT the quality of what was in the store for you to try out before purchasing.  Also, we were displeased with the fact we basically threw away $500 to TRY a bed.  I wouldn't recommend this product or company to anyone.  If I had read these reviews before purchasing I would never have purchased from Sleep Number.  Please don't make the same mistakes we did!!!