Verizon will be useless and unsympathetic.
You can find out who owns the numbers if you are willing to do a little legal work at your local court house.
You need to open a small claims case, with a docket number (costs very little) then when you get a call, dial *57 and local law enforcement will get a read out of the number. You can then subpoena the LEC to divulge who the owner of the number is.
Probably too much hassle considering that you have nothing to gain except good will from someone on the other side of the planet, but that's how it works.
This method is the one we use when trying to trace telemarketers.
