ShopNBC No Customer service Brooklyn Center Minnesota

I purchased a computer from ShopNBC for nearly $2200.00, which I have not been able to use for four months due to technical difficulties. The service provider repeatedly ordered the wrong parts causing a delay in the repair. In early July, I was promised that my computer would be picked up, repaired and returned to me in about 10-12 days. It is now August 21st and I have yet to receive my computer. In fact, no one seems to know its whereabouts. When I called ShopNBC's customer service, I was told that I was On my own after the sale and that there's nothing ShopNBC can do for me.

Sam
Las Vegas, Nevada
U.S.A.