NOTICE OF CREDIT LIMIT
A review of your account indicates a present balance due of $[XXX], which is near or at your credit limit. Every account at [Company] is carefully evaluated to establish a credit limit that we believe is consistent with our interests, as well as the interests and needs of our customers. We have established $[XXX] as your credit limit and believe it is appropriate.
Since you are now at that credit limit, we can only ship future orders on a C.O.D. basis until your balance is reduced. At that time, we would also be pleased to review your account, if you believe an increased credit line is justified. If you have any questions, please contact me personally at (555)-555-5555.