I think the event you mentioned is not possible because the pump is not as easy as it used to be and it cannot be done with a low budget as before. But if you do research on this topic, you will see some services or Telegram groups, which will claim that the groups and the services do pump within themselves. I think you'll already guess that this event is impossible, but I would advise you not to send money to any such applications. Remember, free money is in the mouse trap.