Second the others’ recommendation to reach out via X.
I had a hacking/fraud issue back in February. Hilton caught it before I did. They called me, told me what happened and how they’d fix it, and had all my points transferred to a new account number within 30 minutes. I was very pleased with the service. The various folks I spoke to were all proactive, apologetic, and knowledgeable.
I hope your case goes as smoothly as mine!