Sprint Nextel, Sprint PCS lies, hung up on, overcharged, bad service Nationwide

So tired of Sprint. I have been promised over the past two years that Sprint was updating their data and call packages and it was getting so much better. In the meantime I was convinced by the Sprint staff that I should renew my contract because it would be "next month" that it all got so much better. Over and over again I have been told they were improving their packages. I have called tocomplain on multiple occasions that my pphone's don't work and I am being over charged. I have even had them send me a new phone with hope that my phone was faulty. Now I call requesting to be relieved of my contract without the ETF and every time I call I ask for a supervisor who can help me get out of my contract. Each time I miraculously get disconnected while I am on hold.  I just want out of this contract free of charge due to lack of satisfaction and customer service lies!