Whew - last year's taxes sorted FINALLY with the reassessment doc received.
I made a tiny error with one misplaced receipt and then made the very large error of trying to use the "refile" feature which was just an easy button click.
Never. Do. That. It took 10 months to get reassessed.
If you make a tiny mistake, just leave it and let them fix it, or wait a while (a month?), and use the correction feature on the CRA website.
Ugh. Lesson learned.
