false impersonation of discord workers

I have been in contact with a user on discord going under the name mike_support24 going around servers/dms and many other locations. i bring up this user as he is not apart of the discord staffing when he has been in my dms demanding ransom for my account, discord user deki _kikuchi#0001 and when i confronted him with demand to see these IP-ban claims, all of a sudden the whole mood changed and he began threatening me with demands for money. also impersonating a discord staff member to shove in my face a entire portfolio he crafted to resemble the same portfolio and name of the worker. i have a lot of people telling me he was doing this in others dms and forcing them to compromise.