Problem with the precious metals broker/trader

My jurisdiction is: Florida

Couple of years ago I have opened an account with Bullion Direct - company that provides a platform for the trading, clearing, purchasing, and storage of precious metals.

I was buying gold and silver coins and bullions through Bullion Direct. Several months ago I got a problem with them because of my divorce ... my ex-wife has changed the password and email on the account and so on ... . I have contacted the company about that and asked to send me back the balance of the funds that I had with them. At that time I was in Europe and they started verification process with me. I have sent them all copies of my documents what they have asked. But they do not have a phone number where I can call and talk to someone ... all communication goes through email only ... and they could ignore me for 3-4 weeks without answering my mail or asking the same questions ... all that lasts for months already. I am in the States for over a month already ... gave them my phone number to call me ... but no answer. Where I can file a complain against them or what I can do? Thank you.