What reasons did they give for the rejection? Sometimes they witter on about not enough resolution for the documents. Or more likely they just intend to keep the money even if you take them back in time to watch the moments where your money arrived in your account.

Just because you don't pass their source of funds obstacle course does not mean they have the right to keep anyone's money. Provide them with an address to withdraw to and tell them you're terminating your relationship with them.