To obtain a refund or credit where applicable in accordance with our service guarantee(s), customers should call the telephone number on their invoice or contact our customer service representatives by chat or email and be ready to provide their order number. We must receive a request for refund or credit in respect of a delivery to which a delivery service guarantee applies within five calendar days after the order was delivered or scheduled to be delivered. We reserve the right, at our sole discretion, to refuse a request for a refund or credit of delivery charges for any delivery, when such request is made by any party other than the payer of the delivery charges