That's your biggest mistake - if you wanted to keep playing why did you prestige after 3500? Isn't it obvious you are cheating then? It's like standing in the open field surrounded by snipers.
I kept myself under the radar all this time by simply doing what everyone does but faster and better. Also if you reach too high stage and don't want to prestige, just close the app, deleta all data and bam, there you go!