What is cellco partnership dba verizon wireless in redding?

I may have been hacked/crackered, whatever, taken advantage of. and today I get this weird call from a 530 area code number saying they are with verizon and want me to add text features to my plan. No thank you. I have managed to track this cellco business and verizon could not verify the number and they called it and no one picked up. Any guesses?