Its happen in my country too. They inviting people with no knowledge about cryptocurrency to invest and they scam them. Its hard to stop this, because most people interesting with gain they promise. We should give knowledge to people about cryptocurrency because people will think crypto is a scam
As of now that the market is at falldown ,the Ponzi scheme is now active to invite investors while the market suffer so much price value of coins , they are starting to divert some investors while the market is quiet because of this dslldown season of the market.