A slight aside, and just for those reading but not joining the argument/discussion - if you do get a hold at some point, then consider that you don't need to orbit in tight circles (necessarily) - you could run a few racetrack patters (maybe in different directions), spread the noise out.
You almost certainly don't need to be at cruise power (slow safe cruise?).
Consider (if you can) asking (if inside controlled airspace) for "a higher level due noise abatement" - it may give the controller the prod to remember the noise factor, too.