I am in the process of fighting a couple. We parked on Toorak road to do some work at the the Como building near the corner of Chapel street. My guys set their phone alarms and every hour, just before the hour was up, my guys moved the cars. It did not stop the city of Stonnington papering our vehicle. I initially sent a letter (along with an invoice for my time that I had wasted dealing with the fine) disputing the fines along with a copy of a GPS tracker report from one of the vehicles and received a letter back saying that the inspector's notes had mentioned that the chalk on the tyre was unbroken and I would have to pay! I have since sent them a letter accusing the council of an abuse of power and have asked them to cancel the fine or organise a hearing in court… I have also sent another invoice that takes into account the time I have spent dealing with the issue. Fair enough I reckon.
Friend of mine took them to court and right before the hearing, they withdrew the ticket. He still had to take an annual leave day to go to court.
He had a car logger that showed he moved. It was no match for their 'detailed notes'.
As a rule, if you're writing a letter of complaint, ask for their notes in the first letter. I don't believe they allow for subsequent letters to be sent.