Since you are new, you might not have noticed yet: each post has a date on it. You are responding to a post from April 8, 2017.
That is so long ago that the contact information from those customers will probably not be useful. They might have moved, might have a different phone number, might not want roosters now.
It would probably work better to run your own craigslist ad with your roosters, to see who wants them now.
