I have some first hand experinace- I used to be one but came back over to the other side now that I am older and wizer
Which task group is involved? They are suposed to be vetted by a trainer before being kicked out of the nest to fly on their own. This person(s) evaluates how well the handel the audit and the Staff engineer's both of which can be a real pain at times.
Bottom line is there is usualy 2 sides to any audit and if there is a real issue you need to bring it up with the staff engineer so that it can be tracked and the auditor trained further or their contract terminated since I can not belive that in today economy there is any great issue in finding auditors.