/Pet Attack not working properly

[dephective]

Starting playing a necro alt. Since day one, /pet attack macro has attacked random nearby mobs instead of the targeted mob. This is more than 80% of the time. I have tried /pet attack %T, which doesn't function at all. Going back to /pet attack is the only way, aside from being hit, to get my pet to enter combat. I cannot figure out a solution for this, and its making the class unplayable. I have zoned, re-summoned pet, logged, etc. I have talked to other people playing pet classes in game and nobody seems to have experienced it. As you can imagine, its quite unsettling when trying to break a camp, only to have your pet start attacking a mob 30yrds away in a completely different direction from your targeted mob, or worse, wandering around Guk where you lose sight of your pet only to be greeted by 5 angry red cons.

I opened a petition, but I imagine that wouldn't get a response in a timely manner. I am extremely frustrated, and have resorted to playing other classes that I have less interest in playing. Is this something that can be fixed with game file?

Edit: playing on Green, if that makes any difference.