The same thing has happened to me as other people on this forum,wish I read this first.
I was quoted £60, then they sent me a email quoting me £30 because they said there were excessive scratches on the screen.my phone was in very condition and had minor scratches.
As other people have had the exact same problem,this is obviously a scam.
I also had to pay £5 delivery witch they said was free.
I am not happy and like other people on here i will be contacting BBC watch dog and trading standards. Do not use this service its a SCAM.