I bought a mattress and slept on it for a month, t...

I bought a mattress and slept on it for a month, then I picked it up again and I couldn't find it again. Can I do it again? want to sleep and exactly how you can do that, they should have a curcus for that, certainly customer-friendliness .and that you do not get your money back if you get others then you get gift vouchers that I find so customer unfriendly (I am going never again quite a lot and pussy ikea.