Hi there, we're very sorry to hear that you've encountered such players. We've recently added some features to the game that should help prevent hacking - including an auto-banner - and it's something we're continually looking to improve on, so you should begin to see a decline in the number of hackers you come across! In the meantime, if you can forward us any screenshots from any matches where you've faced a potential hacker to support.ninjakiwi.com and from here, we'll be able to look into this :)