~snip
They won't provide anything. If there was some sort of proof, they would have shared it in one of their earlier posts.
I am guessing that they got caught doing something shady or lost a lot of money and they are simply venting their frustrations in this thread. Don't waste your time trying to explain anything to them.
I was challenging them so any future prospect of trying to taint a sites reputation is going to be lessened because they know that they will have to answer to the people who are asking for a proof that the site really did this and that. Also, I try to be just by being neutral and trying to make sure that the accuser can make their case.