Encoders go dicky & we accept your word that you're however high you say you are - no further action taken other than to maybe ask you to only squawk alpha if it's bothering us.
eep, slight problem with your plan in that we assume you're at the level you say you're at & ignore you, continuing the risk of collision. Just own up, it's safer for all concerned. I'm far more interested in getting you where you want to go safely than punishing you. I'm guessing CASA only takes the full negative attitude to repeat offenders.
XXX, next time make a phone call first or indicate on your flight plan what the story is. Also tell the controller on first contact.