What numbers did you gather to have sure it was bots?
I just went to my Opponents list in Holdem Manager 3, then set the filter to sort by a large amount of
hands like 15k, then sort by VPIP.
For example if you see 15 players(who play in the same games) with the identical VPIP, PFR, 3B, Post Flop Agg - then there is a good possibility they are bots.
Then if you want to have some real fun go to
sharkscope and look and see how many tourney each of them have played and when they play. If they are playing 20 hours a day every day its likely they may be a bot.
Another fun thing to look at is which players are present when they win money.