Hmmm, you want to raise $40,000 to fight about…. I’m not certain, but it could be somewhere around $8800 (the increase from 1900 to the amount paid of 9700). Except, there would be 6 months worth of levies added in here, plus interest.
AFAIK, interest always applies, even if a payment plan is agreed, (unless the committee makes an exception, or by-law, or something).
I think if you want to be taken seriously, then see a solicitor, if they think you actually have a case that you might be able to win, then try again. Also, small claims court (amounts less than $10,000 as far as I know), where you can represent yourself, might be a better option than incurring massive legal fees.