@Paul ***********
no you didn't I think IF you look in your passport you most likely had gotten a year extension of stay NOT a free 90 day extension (look at the stamp in your passport that says "EXTENSION OF STAY PERMITTED UNTIL" and see what that date was on it
AND
the 90 day reporting had nothing to do with your extension at all, and you wouldn't have been doing that without a long term extension
BE that as it may if those are expired and you're on amnesty you either get the embassy letter and ask for a 30 day extension or as immigrations stated in this most recent amnesty decree "prepare to depart" on or by the 26th of Sept :(