Mary, Calling from Mexico to the US is expensive.
There are callback services where it usually runs
about 25 cents per minute. You put it directly on your
credit card. They give you an 800 number to call and
a code to put in. Then you can make your call without
using Tex Mex. You can usually find out about them
from local Pack and Mail or Mail Boxes. There is a
charge for 800 numbers in Mexico. Thats why I use the
computer so much when I'm in Mexico. Its not the same
as hearing someones voice. But much cheaper. There are
plenty of Cyber Cafes around, no matter where you go.