Valve Employees will never ask you for personal or account information, on Steam or anywhere else. You can safely ignore anyone who claims to have mistakenly reported you - that will not get you banned. If you need help with your Steam account, go to https://help.steampowered.com/.
FletcherDunnValve
Fletcher Dunn   Bellevue, Washington, United States
 
 
Software developer at Valve.
Valve employees will NEVER ask you for any sensitive info on social media!.
If somebody claiming to be me says your Steam account is about to be banned, asks for your password, etc, it is a scam.