Irobot roomba won't honor warrenty

UPDATE:BUYING OPEN BOX FROM BEST BUY IS THE SAME AS BUYING NEW. THE WARRENTY ISN'T 'NON TRANSFERABLE' LIKE MANY OF YOU THINK. I HAVE CONTACTED BEST BUY. THEY CONFIRMED THAT THE WARRANTY IS A MANUFACTURER WARRANTY AND IROBOT IS RESPONSIBLE FOR HONORING IT.

I bought a 1k vacuum from best buy nov 2024. It was open box (excellent condition). According to the item specifications, the vaccume still had a 1 year warranty. 2 months after purchase, I began having issues. I tried for 2 months to figure it out. I continued to have problems and now it won't even turn on. I called irobot to put in a warranty claim today 3/15/25. They denied it. Said bc it was open box they won't honor the warranty. I called best buy, and they said there is a warranty. Neither company will refund the item. I just chunked 1k down the drain. I'll never buy another irobot. And I'll never buy from best buy again.