Contour Boxes freeze and reboot itself -

Got 3 new contour 1 boxes 3 days ago. Set one up and noticed that the image would freeze after about 15-20 minutes and then reboot itself. Thought it may just be a bad box. So I continued to set the other 2 up. Then noticed that they all would turn off at the same time and reboot. It has not stopped doing this. So I call and they send a tech out, tech says there is a "known" issue and that cox is working on it. Okay so now I don't have any option but to wait, no big deal. 

I call again a day later out of curiosity and ask tech support, that if there is a known issue with contour 1 boxes freezing and rebooting themselves, this rep laughs and says no there isn't any new at all about this. She tries to reset via the phone, which I knew wouldn't work because that was already attempted. She then says they will send another tech out. Next guy comes out and says that he's never seen anything do that, and it may be the wiring. And to give it a few more days... Is anyone out there having the same issue with theses boxes? They told me to just upgrade to the contour 2 boxes but it's 50$ for each one for me...