Great bed for about 2 years. Bed is layered foam that shifts

Upon buying this mattress, I was extremely happy. For the first two years, I had some of the best sleep in my life. Whenever I moved into my new residence, the bed fell apart inside from being moved. There are several different layers/types of foam inside this bed that make up the mattress. When the bed was moved, the inside layers shifted like a pillow does inside if someone bunches it up. Once the bed was put in a vertical position to move it through doorways, all of the layers inside came apart like they were never even secured to one another. Now the top layer overhangs on both the bottom of the bed and one one side which means you have to stay away from those edges as you will roll right off with no support. Of course, on the opposite sides, it looks like steps. That side also causes you to roll off. It's also bunched up towards the bottom and one side so those areas are more comfortable than the bed should be and then other side offers less. Both sides sink in now despite the original comfort. They will not honor the warranty unless the fabric of the bed looks like it just rolled out of the showroom. Despite my bed protector and another blanket which caused little balls of fabric to stick to it, its virtually impossible to keep a bed that clean. The problem isnt the matress cover. There is no reason why they shouldnt replace or just fix the matress, but money and bad customer service rip offs seem to be the nature of both Matress Firm and Simmons Beautyrest. Should have got the same bed from Serta for 2000 or gotten a nest bed for 500 or 600 and replaced it every 2 years. 5 years later and I'm about to try and fix it myself before it goes out with the garbage. Stay away!!!