Long story, but my frame on first Ram was literally bent in half, 2 day old truck on a lift and lift collapsed. It was fixed, fortunately had two people who were friends of friends that were tops in their field of frame repair work on it (truck was shuttled around the northeast nor two months), truck came back perfect and I drove it many years after that.
I hope you get satisfaction on this, and want to say that while a scary adventure to go through, I hope you can find it in you to give them a chance to fix it and that you have the good fortune to get experts as well. I highly recommend finding a frame expert to check it after, maybe find a large auto auction in your region and find who they use for mediation between buyers and sellers. Good luck.