Ordered and paid for a "next day by 12" service. A week later I asked the recipient when they would refund me for the returned goods. They had never received them. Turns out they hadn't been delivered and were sitting in the courier's depot for a week. Asked Interparcel for a refund on the basis that they hadn't delivered the service I had paid for. Their response: it wasn't a "guaranteed" service so they had no obligation to refund. Apparently if your order doesn't say "guaranteed" there is no obligation whatsoever to deliver within any frame of time. Completely mislabelled and unfit for purpose. Furthermore, Interparcel wouldn't even try to explain how the service had gone so wrong. Use Royal Mail instead