Initial contact and postal arrangements were first class. The tracker said it was delivered on Sat 16th. By Tues I had heard nothing so tried to phone. Either engaged or no answer after 12 minutes of ringing. Then I received an email telling me that their offer had gone from £25 to£0. The phone was only an Huwawei P9 lite was in immaculate condition, in fact, I nearly didn't upgrade it. They say that the screen has white spots. I rang again and actually got through. The girl basically said "tough". I asked for the return of my phone. Will never use Mazume again, nor recommend them to anyone. Disgusted!!! Surely this Company needs investigating.