Amazon/Casper Mattress They sent me a email telling me that I did not have to return a Extra large item and they would refund my money in 14 days. Seattle Washington

I bought a Casper Hybrid Original Cal King Mattress from Amazon, At the bottom of the pay page it says 100 Day FREE return/Replace/Refund Just like Casper Mattress'es Policy.  After 3 or 4 days Both My Wife and I just could not sleep on it. I ended up in my Recliner every Night in Pain, I have had ( 6 ) Spinal Surgeries, Resulting in a total of ( 8 ) Fused Vertabra with Hardware.  Anyway I call no less than 15 times, and spoke to over 20 People in over 10 total Hours on the phone.   During those call I was able to get (2) call tags for UPS to pick up a normal size package. They informed me that Amazon would need to Request a Freight tag to get this Bed picked up.   After one of the many calls I was sent a Link! to a Freight Company that Amazon uses Called Pilot Freight. So when I was filling out the information of what i had to pick up, When I got to Mattress I was asked if the item was opened, and when I checked off Yes, A pop-up appeared Stating that Pilot Would NOT! Pick up a Mattress.   So More calls and I am told that I was being transfered to the Large and Bulky Dept, Then I spoke with a Bryan P. and told him the issue and he said he had to speak to his Supervisor, He returned and Told me that I did NOT have to return the Mattress and that I would be refunded my Money in 14 days.   I asked him if he would send me a email stating That? and He Did!! Now today the 21st is the 14th Day and I am getting nowere. Now I'm being told to please wait until Jan 2nd 2023 and then call back and I can get even mor of a runaround.   Since I got the email I donatted the mattress as I needed it gone in order to put a new bed, and I am NOT being offered my money back.   I am a 63-year-old Dissabled Veteran getting Screwed by Amazon. I have sent emails to several top useless peosonel only to get NO replys. I have spoke to several people in at least (4) Other countries and No one has the Ability to refund my money. Can You Help me Please?