This number had been calling the fax line at my business, which would prompt the machine to answer and waste paper printing out a page for each non-fax. At last count, I had over a dozen pages from this person attempting to call a fax line. So, I finally called the number and told the woman that answered that she was calling a fax line. Before I could even give her the number, she said "oh sorry" and hung up on me. When I tried to call back she answered and hung up immediately. I had to continuously call at least 5 times before she answered again and said "You need to stop calling this number." I told her that I only wanted to make sure that the correct number was removed from her list, and she impatiently said "It was." I asked to make sure it was the fax line and not the phone line I had called from, and she confirmed that it was. I said "That was all I wanted." and hung up on her. I assume it's a telemarketer or scam and maybe she's using her personal cell phone.