I finally answered one of these calls and she asked for my husband by name. I asked her why she was calling she said that he had inquired about a product via the internet(which he is never on). I told her that this number has appeared many times on my caller id but no one leaves a message. I told her that he works during the day and at what time she could reach him. The number did not call back at that time but started calling early in the morning the next day and has called no less than 4 times in the past 2 days. I get a fax sound when I call it back.