After he returned mistaken $24,000 tax refund, his CRA account was locked, actual tax refunds delayed

"Are you going to [pay] me interest then because you're running late?"

Yes, they should. Their rates are actually pretty decent. If he doesn't need the money immediately, this isn't the worst place to park it.

I don't know why the article didn't answer that question. This is a very easy thing for any journalist to research.