FlyerTalk Evangelist
Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: BA Silver, TK E+, AA PP, Hyatt Globalist, Marriott LT Plat, Hilton Diamond
Posts: 13,041
There is no magic email address or secret phone number for the CEO.
Eventually IB will get around to responding to your email. As multiple phone agents have said, calling is just a waste of time because they aren't empowered to do anything about the matter.
I would get the insurance company more involved. In particular, study the policy to see what coverage they provide for future travel. If possible, claim from the insurance company and let them hassle IB.