Casper – you’ll find that the Fee you’ve received is not to do with any services provided by debt collector, but is the Strata Manager’s fee for the preparation of the Notice that you received. So you’re right, the debt collector hasn’t done anything; yet.
If you don’t pay the current Fee, depending upon the Debt Collection Procedures adopted by your Owners Corporation, the Strata Manager may issue a further Notice for another Fee and that’s when they could refer the collection of both those to a Debt Collection Agency — and when they’ll correspond with you and at the same time add their Fee to your Debt.
If you maintain your position, whilst it’s unlikely that your O/C would take the matter to the Local (small claims) Court the debt would certainly be recorded against your Lot, and the consequence of that is that the debt would be paid by way of an adjustment at Settlement (in favour of a purchaser) IF you ever sold your property.
It would probably be a wise move to swallow your pride and just pay the Fee for the first Notice before the Fees for second and third ones arrive!