Met the scammers dressed in police uniforms

The scammers asked me and my friend money and they showed the same phamplets and diaries to show records of people having donated... We decided to call the cops to ask whether it was them , they said it wasn't and when we were calling the police the scammers saw us and started changing their khaki shirts into normal shirts 😭 I remember reading the post on this subreddit about these scammers and somehow didn't get scammed by them pls be aware 🙏