Bhakus

I've started playing a week ago and since then the warlock class has been very buggy, almost unplayable, at first the pets summoned from Call Dreadstalkers did not attack/charge at all, now the tyrant is not attacking, and this is only for Demonology spec, tried going Affliction, in the first mythic dungeon that I tried Affliction, it was De Other Side, at the last boss, whenever I get teleported, besides my pet not attacking, my Malefic Rupture spell could not be cast, these bugs always happen after server restarts, please address this, I love playing Warlock and I find it almost unplayable and I'd hate changing class just for random bugs that can be fixed very fast. Sincerly a Warlock player