190M osrs debt scam by a customer

Scammers profile link: Can't find
Amount scammed: 190M osrs
Discord ID + Unique Discord ID:
Happy
hap3.14
179322068364427273

Proof that it's their Discord:

How they scammed: He never paid the debt (Service payment) and left the server/blocked me
(Should have paid 5 months ago)
Other relevant screenshots:

 

I was unable to find a sythe account tied to that discord, sorry for your loss.