Cant Remove Burn Stains from Stainless Steel Pot

Hello, I was boiling water in my Cuisineart stainless steel pot, but accidentally left the burner on all night, and the next day all the water evaporated and the pot was burnt. I was able to remove the soot, but I can't get the burn marks off. I tried everything, I tried scrubbing the pot with vinegar and water, I even tried Bar Keeper's Friend, where the instructions say to leave the paste on for a minute, but I left it on for a five full minutes. Nothing worked. I do have to say the bottom of the pot is now a tiny bit bendy. Still probably usable though. Has anyone had this problem before, and know what could actually remove these stains? Thank you so much. submitted by /u/dragonaurora4546