We received a 'tax refund' this year. [=this year we paid too much income tax so we got some money back]
They refused to 'refund' the ticket. [=to give back the money that I had paid for the ticket]
If you are not completely satisfied, we will 'refund' the purchase price.
(..) I have a backyard full of these little girls who are counting on a visit from a fairy princess. Hurts! Stop it! Listen! I don't want a refund, I want the fairy princess, please! Please, I'm begging you. You know what? I hope that you can sleep at night, you crusher of (..)2013 Despicable Me 2