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are they a single manager? or are arabic letters and i can't read them? however, they are new accounts, most of them are registered in 14.06.2017, 06.06.2017 and 25.05.2017..coincidence?
Possible cheatings are never discussed on the forum. You can report it through the sytem, by going to any of the managers profile and click on 'Report Cheater'.
Once you have send the cheater report you will get an e-mail with a confirmation link in it. Make sure to confirm your report, otherwise the Support Staff won't be able to handle your report.