cingular wireless nationwide service plan

I TRAVEL AROUND IN A MOTORHOME. HAVE HAD CINGULAR NATIONWIDE SERVICE FOR =

YEARS. JUST RECIEVED A LETTER SAYING MY SERVICE WOULD CANCELLED FOR =

BEING IN A SERVICE AREA FOR OVER 50% OF THE TIME THAT THEY DID NOT =

CONTROL. TALK ABOUT FALSE ADVERTISING!!!!! WHAT DOUS THE WORD =

"NATIONWIDE" MEAN? I SWITCHED TO VERIZON. DON'T DO BUSINESS WITH =

CINGULAR..THANK YOU...MITCH