Been playing through hell mode on diablo 3, for the best of a day and have come across 3 Treasure Goblins. on all the other difficulties you either stun or disorientate him to cancel the portal, but in hell mode, you stun hook do everything you can to stop him and he still travels through. My question is, is there away apart from blowing him up and killing him before he teleport's to stop him from porting away.

I've been playing through Hell mode on Diablo 3 for the better part of a day and have come across 3 Treasure Goblins. On all the lower difficulties you can either stun or disorientate him to cancel the portal. I've tried doing everything I can to stop him on Hell mode, though, and he still travels through. Is there a way, apart from blowing him up and killing him before he teleports, to stop Treasure Goblins from teleporting away?