I got a phone call from a number I didn't know, can't remember if it said a company name or not. It was a guy claiming to be from Discover credit card. I figured it was a scam, but I let him give it a try. When he asked for my card number, I knew for sure. I played along to screw with him, never giving any info. When I asked if I could call back, he yelled at me to flip off. What, mad I wasted ten minutes of your time and you didn't get anything? That's why I rarely answer my phone if I don't recognize the number.