In my opinion, You should be afraid of your privacy. How do those scam bags get your WhatsApp number? Telegram is one of the platforms where scammers do their jobs. Sometimes they use other platforms too. but, Telegram is their favorite one. I think based on what you claimed. you should provide a screenshot of the conversation you had with them. This is a very basic scam attempt by scammers. you may want to read this thread about
[WARNING] Beware of Telegram chats from "investors" +how to report YouTube scamsMy suggestion is, never to fall for social media scammers. If you really want to invest and earn. Do your own research and invest where you want to.