I paid an additional postage fee to guarantee next day delivery (understanding that due to the time of day which my order was placed on the Wednesday, that my order would arrive on the Friday) My order did not arrive until the following Tuesday. I received multiple ‘your order is delayed’ notifications, without any reason as to why this was. I contacted XS-Stock Customer Services to query the delay, and also asked whether I would receive a refund for the additional amount I paid for the failed guaranted next day delivery. 1 week later and I am yet to receive any acknowledgement or response back.