Sprint overcharged my small (US) company for over $50,000.00. We caught them doing it and now they refuse to refund the over-payments. You can read the full story at http://www.sprint-really-sucks.com
I also wrote an open letter to Dan Hesse the Chairman and CEO of Sprint Nextel. It is a good read so please consider reading the letter.
http://www.sprint-really-sucks.com/open-letter-dan-hesse.aspx
