Calling my work phone once or twice a week for the last couple of months. (don't know how they got this number) Never leaves a message, always hangs up. Internet search says it's somebody cell phone service.
They call our office several times a day with invitations to an event for IT managers. She had a list that went on and on but I have other lines to answer and cannot waste time looking up names of people who no longer or perhaps never worked here.
Pleasant person - simply explained that we do not update lists over the phone but they would be welcome to submit a list by fax or by US Mail to our corporate office for review.
She thanked me and we nicely hung up.
This was one of the better calls within a 10 minute time frame.