9 years ago we had service with US Cellular, for about 6 months, getting over charged every month for some hidden charges that weren't supposed to be there (I have since been contacted about a class action lawsuit, but never sent the paperwork in). Then we switched to Sprint, and have been with them ever since. I was late once with a payment a few months back, and was contacted by their customer retention department, to make sure I was still happy with service. I said yes I was, and even more so after she knocked our monthly cost down for being a long time customer!