Is anyone really there???

Does anyone know how to update your non cox telephone #  for your acct?? I've been all over the site and can't find it. I sent an email under the "Send an Email to cox.com", never got a reply, tried to live chat and they are always "busy", and by the time a live person answers your call & verifies you, somehow the call is disconnected. I'm truly starting to wonder if these links are just a hoax to make the customer think  that Cox is a leader in customer satisfaction. If anyone can tell me how to update my acct info..or maybe when Comcast is coming to Norfolk, I'd appreciate it!