even after you've come back and made excuses, i mean explained yourself
, the fact of the matter still is that you're living in your Dad's house and while you're there you need to abide by his rules.
You made the decision to leave school & go back home. Seems to me if things were all that bad, you would
already have a job, regardless if your Dad approved of it, and you'd be on your own paying your OWN rent in your OWN space.
Be lucky that he's just asking you to do a few minor chores instead of charging you part of the mortgage & utilities.