atrocious customer service

Our family has purchased at least 5 Dell computers but we certainly won't be purchasing another. When my XPS Inspiron 15R was a year old and already showing problems ( the metal rim turned out to be plastic and when it came loose I was told to super glue it), I purchased what I thought was an extended warranty. After the screen went blank I was told I hadn't bought warranty for hsrdware but had paid nearly $300 for software insurance. After paying another $179 and sending it in, two weeks later I am told they need to replace the LCD screen and I need to send an sdditional $ 199 and I'll still have a piece of [Admin Note: TOU Violation Removed]. They can keep it but I desperately need a working computer for my work. Of course I get a run around when I try to talk to anyone. can't imagine a worst customer service experience!