On April 4, 2014, a press operating company sent a fax including the following information to a metal plate manufacturer:

"Size - TU. Quantity - 25. $45 each. $1,125 total. Ship to our warehouse in LaGrange, KY by May 1, 2014 Payment 10 days from delivery."

The manufacturer immediately sent the following fax in return: "Order is accepted. Ship by May 1, 2014 Interest on balance over 30 days at 2% per month."

No other communications took place. On May 6, 2014, 20 metal plates meeting the specifications were delivered, along with a note stating that, due to manufacturing difficulties, no other plates of that specification could be delivered. As the press operator, how would you respond?