Oh, the other thing is that all I have to do is tap the number on the message to dial it. I have the "show caller id" section (under settings/phone/show my caller id) turned off so that they do not see my phone number.
The message states that if you do not get a call back in 30 minutes perhaps we did not get the right number. Sometimes it is 10 numbers, sometimes 9 or 11 (without a 1 in the front) I do not try to interpret, unless I know the number by heart
