9640 issues with my replacement from Dell for my first that went bad..... What to expect next?

My first Dell 9640 started having issues 9 months into ownership. Dell tech was great and eventually decided it needed to be shipped back to factory for further evaluation. 24 hours after receiving the laptop they determined it needed a part that had a 6 week delay in getting it. I escalated the issue to the next tier and they agreed that was too long and sent me a refurbished laptop equal to my original in specs. 3 weeks later I started having issues with the replacement.  It wouldn't come on after being in sleep mode and showed a series of fault lights ( blinking lights above the keyboard) that did not have a fault associated with the combination. ( 8 white /one amber). Only a hard reset got it booted. I was once again escalated to the escalation department and it now has been thrown up to L3 for further diagnostics. At this point I want a new computer...but that is getting resistance if not a flat no. What should I expect at this point. Not quite sure I trust their refurbished unit to give me smooth operations...considering it is already proven not. I did get them to extend the premium warranty for another two months but even that makes me a bit uneasy at this point. Why should I be dealing with issues on my second replacement computer?