If your complaint is regarding a ghost, we already have a policy for that which is above. We do reverse reports if there is evidence to do so.
If your complaint is regarding a controller in general, simply notify a moderator and we will look into it. We ask that these be legitimate complaints and not “I waited on the ground for 10 minutes during a FNF”. Often times there are reasons why a pattern is shaped the way they are or why you had to go around. We will help to answer questions.
We do hold our controllers to standards and if there is a history of issues they may be demoted, counseled, and in extreme abuse cases removed from IFATC.