how do I get a brand new XG1v4 box. I have been through 4 of these boxes and each one had differnt issues.

how do I get a brand new XG1v4 box.  I have been through 4 of these boxes and each one had a different problem.  The one I currently have locks up constantly.  The first one worked for a little while but then would display an message saying I wasn't paying for a particular channel, then eventually I couldn't change to any channel.  The second box would not get through initialization.  The third box would only display an error message.  The fourth box, the one I currently have locks up end has to be hard rebooted every time it's been off for a few hours.  I have been on multiple calls with support for several hours and they just keep suggesting the same thing and waste my time.  after I had a tech come on site with the third box, he replaced the cable run to the house.  That still didn't work.  He did not have a XG1v4 box available, so he replaced it with the normal non 4K box that he had, and that worked fine.  A few days later I ordered a box using menus on the cable box, hoping I would get a new box.  Instead not only did I get a used box, but when it first came up with somebody else's phone number.  I had to reset it several times before it finally showed the correct phone number.