This happened to us a few weeks back. An employee’s Facebook was hacked/used to gain access to BM. They removed all of us from BM and started spending on 30+ cards to a Russian site. We contacted a rep, and worked with Facebook to provide proof they were our businesses, shut down and reissued all new cards, and were refunded. It was a real nightmare - but be sure anyone who has access to BM is setup with two factor authentication and for business continuity and disaster recovery purposes, consider having different cards for each network you advertise on so that if this were to happen again and you can cancel the cards only used for Facebook, preventing it from impacting spend on all of the other networks you advertise on. It’s a process, but it’ll get sorted out. Wish you the best of luck.