Request for Extension of Time on Promissory Note
According to the terms and conditions of the promissory note signed on [date], we are obligated to tender payment in the amount of $ [dollar amount] on [date].
Unfortunately, funds, which were to be paid to me prior to the due date, have been delayed. Needless to say, this comes as a great disappointment to us. However, we have been assured that these funds will be in our possession by [date].
A request that the due date on the promissory note be extended for a period of one month and a just consideration for the extension suggested by you.
I will look forward to your early response.