i am in India. however let me repeat the steps i took
clicked on message icon
on top of the next screen is the New Message button- i click it
a message box appears along with an Add recipient button- i click that
now, on the top are two buttons contacts and favorites out of which Contacts is the selected one. below this is a blank space with the words [enter name number or email]. i enter the un-saved number [from the craigslist

] The Add button on the right of this blank space which was inactive till now becomes Active and you can see the word Add clearly. i click it
when i do this the blank space where i entered the unsaved number becomes BLANK again, and on the bottom of the screen a word comes saying " Selected 1" just below that there are two buttons Done and Cancel. i click Done
the screen clears and the message box appears at the bottom and the new unsaved number can be seen on the top. now i enter the message and press Send button
tell me what happens at your end when u follow all these steps!! phew