If everything else fails, and your report doesn't get resolved in a while, reach out to niantic help on twitter to escalate your issue.
View How To Report Cheating Pokemon Go Background. Pokemon go cheating report form it's specifically the report inappropriate gameplay form that you need to fill out for reporting cheaters. How does your definition of cheating and the example you gave compare to the tos?
How To Report A Pokemon Go Cheater To Niantic Pogocheaters from pogocheaters.com
I'd heard about pokemon go bots you could run on your computer: Also, we strongly recommend to focus your reports on spoofers and botters, as niantic is targeting them more severely with bans. Playing a game like the extremely popular pokémon go by the rules is the common ground for collective fun, but some find cheating irresistible.
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Here is how you can report these annoying. Cheating is not advised by the creators of pokemon go and some cheats, such as location spoofing, may cause your account to become banned. As much as reporting players helps, niantic really needs to detect it better themselves. It's a futile effort, but you can go to settings > report a critical issue > report a gameplay issue.
