How do I get a refund on a mobile app order if the store was closed when I got there/I submitted to the wrong location?

How do I get a refund on a mobile app order if the store was closed when I got there/I submitted to the wrong location?
If you have already clicked ‘Place Order’ and you have received the Order Confirmation email, your order was already sent to the restaurant and cannot be cancelled. Please send your request through our Contact Jack page within 30 days of your date of purchase. ** Orders past 30 days will not be refunded. **