Unable to change my email adress.

Hi blizzard, I just recently moved from a town into a city, my home address has updated just fine.

I went to change my email contact and it said I must check my old email address for further instructions.

Only problem is I don't have access to that old email address anymore because it was part of my old internet company where I used to live, and is now an inactive email address.

I don't have a home phone or I would call like it says.