Hi Jayrena,
As long as you’ve used the “report player” tool to send your report, it will be investigated. Though it generally does take multiple players reporting someone for it to generate the investigation (for obvious reasons)
If no one reports them, then they usually are also caught by our hacks team running their regular actions, but obviously it’s preferable if players report any that they see.
Sadly it’s not viable that Game Masters enter game and pro-actively look for bots, primarily a Game Master’s role is to answer support tickets, to assign individual Game Masters to spots in game (per server) would take more GM’s and time away from the support queues.
But to answer your first question, Blizzard does still take the bot problem very seriously, sadly the bots also take botting very seriously and very quickly have new accounts up and running, so as always, it’s an ongoing fight. 
Please keep sending the reports and we’ll keep actioning them when they reach us 