About my Tempur

I told you already that I bought this Tempur pillow. And I said also that it was expensive but extremely soft. Then…it seems that after coming home it changed and now it’s not soft anymore. Every time I wake up I feel so tired and my back is hurting. In the manual (cause this pillow has a manual) they say it’s normal…but how can it be normal?
Maybe I have to buy also the 2.000 Euro Tempur mattress?