Aggressive bot
I have seen plenty spoofers before, but now we apparently got a very aggressive bot here. You take a party, beat a gym, place your mons there and in minutes, it is back, with the same two accounts. No matter whether it's morning, noon, midnight of 2AM, we have tried all those times.
Did the bots get more aggressive recently?
Answers
You are just unlucky. Most players never get this or just don't play enough to realise. When you do there is no fighting it. My advise is to give up. I have been waiting for 6 mo the for something to be done but honestly I just don't think anything will change. Every week or so I log in here to see if cheats are finally banned. I don't bother with local gyms any more as it is impossible and I stick to my own teams spoofed gyms in other areas. Truth is from what I can tell all stable gyms are spoofed and or boted. Good luck though.