Yeah, there is absolutely no way to get the money back, your friend has been scammed and this is a very typical scam. The platform he deposited money into is controlled by these scammers, so there is no money to withdraw and they will keep requesting that their victim makes extra deposits to be able to withdraw, until the victim gives up.

So this is a lesson to your friend, they should use reputable exchanges and ask questions first when they are in doubt. It is common for people to ask questions after they have been scammed and not before, and it is not nice.