The bottom line is that you need to demonstrate the fault, and no - you won't get a replacement or refund at this point.  System replacement is an option only after three repair attempts for the same problem has failed.  
I purchased a new Dell XPS 17 9720 in September. After less than 10 hours of run time (not use), the computer begins to open and close screens, delete files and execute commands all while I am not touching anything on the computer.  The touchscreen was replaced by Dell and the system completely wiped and reloaded. The last technician wanted me to send a video of the issue (as the problem can be random, I cannot sit in front of the computer hoping to catch video that is useful) but could not supply a single point of contact for a phone or email. This is not acceptable because every technician I have spoken to has followed up with an email stating that if the problem was not resolved to reply to the email and they would pick up the ticket again for further diagnostics. Not one of those technicians ever responded to my reply emails! Every time I call, I am routed to a different tech and we start all over even though the history of this computer is there for them to see. I need to have a single point of contact that has the authority to replace this computer with a new one OR to refund my money for a return. Anyone?
8 technicians, 15 hours on the phone with support, still no resolution