Blizzard has made it very clear that they do not like it when their player cheats in the game. Players thought that had the upper hand with some new undetectable hacks but Blizzard is clearly showing them who is the boss now.
Blizzard once again went on a banning rampage taking down accounts that have cheated in the game. Some of the cheaters were caught off guard as the cheat they were using was said to be undetected but Blizzard still found out and now they are kicked out of the game.
As we all know, Blizzard does not go easy on the cheaters. Those guilty will be permanently banned from the game. Of course, you will still be able to get back in but you will have to buy the game again, make a brand new Battle.net account and more so that Blizzard does not recognize you as being the same cheater.