If this is a 1st offense, then you are probably not going to be in Facebook "jail" for very long.
It may just be a matter of toughing it out for a week.
And you should be able to cancel any running ad campaigns independently of having a viable FB account -- you're not the 1st person this has ever happened to.
Needless to say, once you're back in, change your password and ask a trusted (and I mean trusted
friend to help you run your business page so you'll have a fallback and someone can run the page if anything like this happens again.