* Simple: I requested a refund for the faulty product.
* With context: After my flight was canceled, I received a full refund for my ticket.
* Specific: The store offered a 50% refund on the damaged item.
* Formal: The customer service representative processed my refund request promptly.
* Informal: I'm hoping to get a refund on these shoes, they're way too small!
Let me know if you'd like more examples or have specific situations in mind!