So it turns out they have a Facebook app that allows you to send a secure message. I have not used it personally but it certainly beats waiting on the phone if you don't have an urgent requirement.

https://socialapp.bankofamerica.com/facebook/home.jsp

I actually called them recently because I mistakenly did not have autopay enabled on an account I had just started using again and got charged a late fee and finance charge. I am a Platinum Honors level customer. I had to wait a few minutes on hold (less than 5) but the rep was excellent and within 30 seconds (and before even asking him to do it) he had reversed the fees and made sure I would not get charged interest on the next bill.