Paid for Priority Delivery with and didn't receive products on time

Order Number: ***

My order was scheduled for delivery on 08/06; however, it was not delivered as promised.

I specifically paid for priority delivery with the expectation that the order would arrive on the agreed date. As the delivery commitment was not met, I request a full refund of the delivery charges paid for the priority service.

Please advise on the refund process and when I can expect the refund to be processed.