It is very unlikely bitfinex would be scamming you, and they will get back to you on your support tickets.
It's very unlikely? What makes you say that? You do realize that a ridiculous number of Bitcoin "exchanges" have ended with the majority of the users losing money, don't you?
Has there been third party audits of BitFinex's operations?
Yeah, it's "unlikely" maybe if you define unlikely as below 50%. Most exchanges disappeared, most likely "hacked" by insiders.