Here’s a sample template you can use to write a letter for the cancellation of a credit line or letter of credit.
We regret to inform you that we are suspending your credit with us. This is due to the unpaid balance of [amount] that was due last [date].
Please understand that while you’re very important to us, it is also important that we extract credit payments on time to ensure that our organization can run smoothly.
Please contact us as soon as you can so we can discuss and settle this matter.