Fitnessblowout.com refused to honor warranty Los Angeles California

I purchased a treadmill from fitnessblowout with a lifetime warranty on the deck,elevation motor and speed motors. Recently the treadmill stopped abruptly almost causing serious injury.

A repair person was sent out who stated that the walking deck was warped. After 2 months the new deck arrived and I proceeded to use the treadmill. The repairman had not been gone 5 minutes when the treadmill stopped again.
I called Fitnessblowout and they told me that the motors were not covered on my warranty even though I have an invoice that says otherwise. In fact they emailed a "copy" of my original invoice which conveniently had that part of the warranty taken out .

I can not get anyone to take my calls(steve Barzilai or jim rosen included) or return my emails. I have been trying to get this treadmill working for over six months.
This is the worst company I have ever had to deal with!!!!!!! Dont purchase anything from them.

Donna
Garner, North Carolina
U.S.A.