Received multiple calls from this number. I called them back using *67 so they couldn't trace my number. It sounded like a call center. I told the person who answered that I had received multiple calls from their number, and I asked what type of a company they were. Since I had used *67 when I dialed, she did not have my number. She asked for my number, but when I refused and asked her what type of a company they were, she simply started humming so I hung up and put them on call block.