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/.
Erik.P
Beware of scams
Valve employees (including myself) are not on Discord or any other social media asking you for personal information. You can't get banned from someone claiming to have mistakenly reported you. Only share your information with Steam customer support through the official website https://help.steampowered.com/