Hi,
Report the clone to each game you are in and in which they copy you. Hopefully the game should remove the clone.
In Achat take a pic of your profile and then the cloned profile and point out the differences
Report it to Achat using Support on the menu bar above next to shop.
I use Light shots to take pics. You can download it for free. Then to get an http address i use imgur. Again you can set up an account for free.
After you have done that, send in your complaint to support with pictures and then also post the pics here so you friends can see the clone and the real you. Point out the differences to look for in the profile.
Tell you friends a password or security question to use so they know it is you when you message or chat. If the clone does not know the password or answer, tell your friends to put that account on ignore. The clone cant message them then or chat to them.
Hopefully the idiot will be banned soon. Good Luck.
For taking images – Light Shot http://app.prntscr.com/en/download.html
For storing images and giving them a http address – Imgur https://imgur.com