Horrendous customer service. Sent my phone back and paid 8 pound to ensure next day delivery before 1pm. I had confirmation they recieved the phone and 10 days later.. still no payment!! I've rang customer services twice and they have said 'there is nothing we can do as the trade in team have your phone. They don't have a number so you cant ring them'. I've emailed the trade in team and each time it takes 48 hours to get back to me. I am extremely frustrated to say the least, it feels like a total scam. I would not recommend using carphone warehouse for anything, always had shocking customer service. Don't waste your time.