Newegg Business partner Micomp. Sold me a refurbished computer that was defective

I ordered a Dell PC in January 2019 and it stopped working in April 2019.  Newegg would not allow me to return it or get a refund and referred me to the company they got it from, Micomp.  I contacted Micomp by email, who seemed willing to fix my problem.  However, after sending me multiple parts to replace and 2 hard drives, the computer still does not detect a hard drive and is unusable. 

Last week Micomp told me they would replace the computer and I agreed.  On the subsequent Saturday, I tried emailing them again and my emails were rejected.  When I called Micomp, I was hung up on.  Please someone start a lawsuit against these companies, they are not doing businesss in good faith.  Newegg doesn't even have a physical address and the Micomp website is listed as not existing anymore.