So they just released a public announcement in their social media that scammers and cyber criminals are impersonating their brand or company. Scammers are cold calling anyone. I haven't received any though, and most likely leak personal data of crypto enthusiast might have been used here.
This is just a regular warning most exchanges makes to let Thier customers know what's possible with scammers and fact is that it's rare before you see even banks making a direct call through to Thier customers because now, customers contact can be easily gotten and the process of impersonation is damn real.
Before using an exchange or a platform, you have to get all this information so as to understand when something that's out of the ordinary is coming.