Asking regarding ad

So, I acquired an ad in my Instagram feed relating to a crypto buying and selling firm. It seem authentic like there 1k+ followers and constructive assessment. Its initially ask us to provide them investment and they'll return us significantly greater than precept quantity like approach a lot. Like its lowest package deal is of 850 rs if I invest 850 rs by way of their buying and selling company they may provide me with profit or refund. But i'm so confused