Hi, I don't have a screenshot of the payment, I pay you with bitcoins directly to your account. I had to buy those bitcoin and spend the 350 dollars
That's why I write in this forum, because I was a scam paid with bitcoin that cost me 350 dollars
He promised me a service never gave me the owner of
https://paypalunlocked.com/ 
Tx Transaction?
On other thread
https://bitcointalk.org/index.php?topic=5205019.msg53218242#msg53218242, this user a.k.a "Paypalunlocked" saying that you tried to blackmailed him. Asking him to pay 100$ of bitcoin if not you will try to destroy his business/service reputation.
However, based on this situation @OP still doesn't give us a good explanation and proof. If @OP still doesn't give us proof or transaction history, i believe hi tried to blackmailed him. This situation looks shady for me, please post a proof and scam assumption using this thread
https://bitcointalk.org/index.php?topic=260073.0