Lemon policy refused, what's next step?

I have bought three laptops from Dell in the past 2 years for my children going to college.  Two of the three are great, no issues.  I also bought the three year "Dell Premium In home service" for each one.  The problem laptop has been in the shop going on 5 times for the same issue.  Dell refused to do in home service, despite my warranty saying on site, and had me drop it to a local ubreakifix shop, which I was fine with.  They have replaced parts, reinstalled Windows, and updated drivers and the problem goes away for a couple weeks, sometimes even a couple of months, and then reappears, usually when there is a Windows or Dell driver update.  Iit won't update, it gives an error, says permission denied, or just crashes.  The audio also goes out during this time for the internal speakers and any bluetooth or plug in headphones.  No audio at all.  

This last time (5th time) I asked about the no lemon policy printed in my warranty that states "No Lemon Policy: After three (3) service repairs have been completed on an individual product for the same defect, and that individual product requires a fourth (4th) repair for the same defect, as determined by us, we will replace it with a product of like kind and quality that performs to the factory specifications of the original product, not to exceed the original purchase price, including sales tax.  Replacement products may be new or rebuilt to meet the manufacturer’s specifications of the original product at our discretion. Technological advances may result in a replacement product with a lower selling price than the original product. The No Lemon Policy does not apply to repairs performed while the product is under the manufacturer’s warranty. Preventative maintenance checks, cleanings, product diagnosis and customer education are not considered repairs for the purposes of the No Lemon Policy. "

I was told no and that "We would like to inform you that generally replacement consider when parts get replaced thrice in a month and I see only one time parts got replaced."  I explained that is not what the actual warranty says and the warranty is a legal contract.  He said he would check with his backend team and email me.  His email said "