I buy and pay. PUBG for players in my country

I want to create a customer service
Through this service, I buy and pay. PUBG for players in my country
I want ideas that will enable me to do this
For example, where can I find the main provider of this service? So that i can get the lowest prices
and they have api
How do I make the payment. What is the payment mechanism?
Note: I could not contact the company itself
My request, I do not want to create a program or code. I am looking for a api that can do this at competitive prices in my country