Gather every piece of evidence possible. https://www.fbi.gov/tips
Here you can report the DDOS attempts, and possibly receive other help regarding the scam.
Hope everything works out, scammers are vile.
Andrew Chang has started to take the situation seriously. He is asking to have this thread deleted.
@Saboteur , can a MOD please move this to a private section where it's not indexed by google? If not, please archive/close.
If you reading this Andrew, thank you for reaching back toward me, I really appreciate it.
Thank you for the support & help everyone! <3's /bow
--- Edit ---
I see everyone's point. He paid back most of the money, but not all of it as everyone has advised. I would like to please keep the trhead open until I've been fully compensated.