Hi and thank you for your follow up.
I apologize for not getting back to your other messages, we've simple been overwhelmed with designs.
We greatly appreciate your offer but out of respect of you time, we have narrowed it down to two designs and feel very confident we will go with one of these.
Thank you again for all your time and consideration!!

okay. so no more submissions?

That's up to you. But as I said, in fairness to you and your time, we feel pretty strongly about the 2 we have it narrowed down to.

Thanks!