I took a call from them, they are United Digital Solutions in Van Nuys, CA, (Los Angeles Area) and they sell aftermarket toner for laser printers. I happened to be interested and told them to call me back in 10 minutes, the next call came from an unknown number.
I got a call from this number, I could not understand the caller because of her strange accent. She called me by my name (scary) and then she tried to sell me telephone cards.