The guy named Mario Hana use almohasb email address for paypal invoice but never paid me. He used a lot of excuses and really strange excuse. I don't know the relationship between them or whether they are the same person or not. I also contacted by guy named David Polin. Maybe notrinos can tell us how he know about Mario Hana, almohasb, and David Polin.
It was my mistake to give my work before I got paid. I have worked for years and this is the only time I got scammed. The guy already told me he had transferred the money via bank transfer (international) and told me it would arrive in 3-5 days. I believed him and gave him the work. After that "transfer" failure, I forced him to use paypal, transferwise, western union etc. He gave me fake WU transaction number and fake tansferwise receipt.
Anyway, just be careful guys. Make sure to not believe anyone and get paid before delivery. Only use paypal or other direct payment method that you can know the guy paying you is not lying. If you contacted guy above, just don't trust easily.