I bought an iPhone 12 Pro Max from Mazuma through backmarket.co.uk after six weeks it stopped working I sent it in with secure packaging and they said we have three days to get back to you with either a refund or exchange. I contacted them many times and they kept stalling and I even had to get the company moderator involved. Then after 14 days they sent a picture showing my phone with a broken screen of which I sent it in unbroken with secure break proof packaging and a note saying it’s outside of the warranty because it’s been bent or dropped when I clearly sent it without any damage whatsoever except for the phone not working because it seized on its own. I find this completely unacceptable and have escalated this to the backmarket management team. But don’t buy from these people they will disappoint you. So far looks like £700 down the drain