I purchased an item and requested next day delivery at an additional cost of £7, making total delivery charge of £14.50. I decided to pay the additional charge for express delivery as the usual method takes 1 week and I didn't want to wait that long. I placed my order on Wednesday evening so expected my item to be delivered on Friday. It was not delivered until the following Monday. Although I contacted customer services on 3 occasions I have not been told why my item was not delivered on next day service and have not been offered any credit for the additional delivery cost I paid for