Nairalanders Pls Help Me.

I got scammed of my last earned money yesterday by a northerner I met online. He claimed he sold a hack pos that could yield money,and that I should pay any amount of money ,we had a lengthy conversation for close to 3days and he assured me it will work. So out of desperation, I paid to his palmpay 23k using a pos vendor,it was approved and he later claimed the money did not drop into his account. I also show him the evidence that it was approved and delivered.before you know it,he became rude over whatsapp,he started raising his voice at me,blocked my numbers,blocked me on whatsapp. Pls how can I retrieve my money back. He is a scammer and he ran away with my 23k.pls I need you people to disturb him to return my money. I will attach his numbers are.+234 916 776 875609039638286The numbers are all on whatsapp.pls tell him to return back my money.