I had a bad experience with Freelancer a few years ago. I deposited $250 for a small freelance work. As I found no interesting or potential candidates, I cancelled the project.
They asked me for my ID, and other details so they can refund the money. It took months of back and forth with their support team and then they decided that they are going to hold this indefinitely as unresolved.
Should've done a chargeback. You tried to things the right way through them first, they essentially refused by not getting it done, so you're entitled to ask your card provider to get it back for you.
So many people are not aware of this option. I've done it 2-3 times in my life, generally because a company thinks they're going to jerk me around. One was an ACH that came from nowhere (still no idea how that happened, and the bank wasn't much help).
They asked me for my ID, and other details so they can refund the money. It took months of back and forth with their support team and then they decided that they are going to hold this indefinitely as unresolved.
Never got my money back. They are indeed a SCAM.