Instagram hacking/ illegal?

[heyy]

Okay, so on instagram, everyone wants followers. I went on a website which was posted on a persons account that I follow. They asked for the username and password, it looked like the regular instagram log in. Then, the window after that, they said expect followers in 48 hours. So, then, few hours later, I see my instagram logged out, which is odd. I try to log back in, but I can't. The man, (yes I know its a male) changed my bio, and email, and password connecting to the account. He didnt post anything, but he did post a picture on a girls account in which saying, click ehre for instagram follows. IS THIS ILLEGAL? Can I bring it up with the police?