I forgot my diamond earrings in the room upon check out at the Hilton Palacio Del Rio in San Antonio on January 30th, 2019. When I called the hotel back few hours later, they had found them. I asked that they be mailed to me via FedEx. They were mailed uninsured via USPS and dropped in an envelope like a letter without any wrapping or padding. Earrings got damaged and diamond got lost (3 carats). The hotel said it was not their fault, whereas it clearly was. Any advice?