I have a suggestion! Because in the notice of the promotion you not publish a date set for payment of the promotion. From our point of view "Customer", I think we're their customers, we have no absolute certainty that the forms have been completed and received, which could be solved with a simple prediction of payment. I believe this action can release them for other activities and leave their customers satisfied.
Note: A promotion can take up to 10 days to be paid.
I hope I have helped.
Sincerely, thank you.