Not happy 3 years later

We bought this mattress 3 years ago and I'm very unhappy with the bed. I wasn't very satisfied right away, but I thought that my body would adjust to a foam mattress eventually. I should have returned the bed right away. When I first got the mattress, my hips would hurt; although this has since gone away. When you first lay down in the bed it feels nice, but the foam will heat up from your body heat and then the foam really wraps around your body. This makes my shoulders round towards the front of my body (back sleeper) and I have upper back pain when I get up. I frequently wake up at night because the mattress under me has heated up so much that I'm forced to adjust my position and lay on my side just to cool off my back. After that, my arm and shoulder start to hurt. Finally, the bounce factor is completely gone. Read into that for purposes other than sleeping. This bed was so expensive it breaks my heart that after 3 years, I'm shopping for a new bed and getting an interspring mattress only. No more foam.