Same maessage as Lindy above. I called Regence Blue Shield and they stated "No legitimate business would ask for your social security number to be left in a message". I agree. It is not Regence Blue Shield.
Regence Blue Shield regarding an issue we were working on ==> totally legitimate. Left a message to contact them on their 800 number with the specific extension of the person.
Regence Blue Shield returned a call from customer service to verify that I was now enrolled in their auto pay program, they did as I asked which was great because I travel for work and was not going to be available to get a notice by snail mail that my enrollment had been completed. They also sent me an email as well. I was expecting them to not follow through with either. Great customer support!