Signal levels have degraded in Winston-Salem, NC to the point where my phone is not worth much more than a paper weight. I have been with Verizon (and its predecessors) since 1987 and have never had this problem. I've been a vocal customer, promoting Verizon over other carriers based on excellent signal quality. I have not been able to maintain calls for the past 6 days, most notably in three distinct areas where I spend most of my time. Any known issues in the area?