I would keep bugging them as much as possible. Call daily, contact everyone up the chain of command, do everything you can to get the chairman's info.

That statement from October 26th is pure bullshit. They just don't want to deal with it anymore. I personally would be going nuclear over this. Get these people's info and never let them go a day without hearing from you until you get that cat back. There's also now way the "new family" wouldn't give that cat back to you. They aren't as heartless as the ASPCA.