Caller ID says OTICON and the internet identifies this company name as a vendor of Hearing Aids from Denmark. I did not pick-up to answer the call. Caller ID's can be spoofed and I don't reward unknown telemarketers with a "live phone" pick-up response. Based on another comment posted here I assume they want to set up a hearing test to sell you a hearing aid. They obviously do not respect the national do not call registry because they are foreign owned..