703-468-2204

I have been receiving calls from this number for a week now; all times of the day and night.  This person has spoken to me; very strange sounding voice, can't understand what he is saying.  Have called police twice but they can do nothing about it.  I have also tried to call the number and I come up with a fast busy signal.  Tried to block the number but it cannot be blocked by the telephone company.