Many years ago, in a different age, I called the phone company about long distance charges billed to our account. The calls were made from a town in Arizona where I didn't go at the time.
On something like my third call to the phone company, the rep said "Sir, even though your number was charged fraudulently, I am not allowed to tell you that number (602) 234-5678 owned by John Smith at 123 Maple in Show Low are where the charges originated."
Can't get away with that now.