One star is even too generous. I pre-ordered an Iphone 7 Plus Upgrade, last Friday (28th Oct) to be delivered today (4th Nov). So i already had to wait a week for this phone, no big deal to get the phone I wanted. On Friday, the day of expected (guaranteed) delivery, I get a text saying the phone is going to delayed for 8 days! Even though the phone had been preordered for a whole week and they should've known to keep one for me. In the text it says i have £20 in-store credit to use, but thats no good as now i will have to pay £39.50 for an extra month on my current contract because my new phone should've came to replace this one with my new data before my data for this month runs out. Customer service for my upgrade has been disgusting, it took over an hour to actually order my new Iphone over the phone and now I have to wait and extra 8 days because you didn't reserve a phone when I have already paid my upfront cost!! And after emailing them to complain they tried to put the blame on Apple, saying it's because they didn't provide enough stock. When Carphone Warehouse are the ones who oversold phones they didn't actually have to give to customers! And if I want reimbursement i should go through Apple. disgusting. This will be my last contract with Carphone Warehouse...