I had the same thing happen to me. I was on the phone and got disconnected 3 different times. Each time I told the Verizon DSL person to call me back to my DSL number. They could not figure out my problem so I said buy....then my phone started ringing off the hook. Calls were from 412-650-3799. I answered and there was nothing but dead air. The caller ID said PRCISION RESPO.