I think with an equation question and the administration email option you should be able to do this.
I would create a equation question that check the "rep_name" question and writes the email of the chosen rep into the question. In the admin email option you just put the code of that equation question and it should send an email to that rep.
I would create a equation question that check the "rep_name" question and writes the email of the chosen rep into the question. In the admin email option you just put the code of that equation question and it should send an email to that rep.