I 'sold' two HTC mobiles to CeX/WeBuy. One was returned to me broken. However the phone they returned was one I sent them. They promised to look into this but never did. And the other they never paid me for. I tried for 3 months to get the money or my phone back, I got nothing other than emails apologising and saying they were looking into it, or that a cheque was on the way, or the cheque must have been sent to the wrong address
So in sum, CeX/WeBuy stole two mobile phones from me. There are better companies out there. Good luck.