We have setup a supervisor rule to send out email to requester stating we are waiting for a response - 

We have found that sometimes that rule does not apply and send emails hourly instead of how configured in screenshot.  The issue we have is that it is not doing that on all tickets that meet the conditions.  Any ideas would be great.  The screenshot does have some details such as which day email is being sent at which stage, but I hope you get where I am going