As I stated earlier, you took the right course of action by rejecting their so-called offer. There is no need to accept a 33% offer with strings attached when you are entitled to $300,000 with no strings attached.
What are you planning to do next as you attempt to recover all of the $300,000?
Yes, they were being vague about it and I didn't feel like inquiring further as I was not interested in the offer.
Well if all else fails there's always the option of a lawsuit.