Bad after sales service from Restonic beds.

I bought a Restonic bed on 09 September 2024. Delivery was on 13 September 2024. On the first night, I felt the bed was very firm. I thought I will get use to it. Upon phoning Restonic today, after 5 sleepless nights, they inform me for the first time, that they do not do exchanges when it comes to comfort. Why was I not informed about this when I bought the bed? This is totally unacceptable, as I now have a bed that I spent thousands on, that I can not use.