We can send an exemption certificate upon request. Indicate who it was for and the purpose of the function. Invoices for unusual items should be explained. The invoice is mathematically correct. The account to be charged has the funds to cover it.
Payment is in order.
If there are attachments please include copies of those also. Be sure to indicate the PO number and explain the charges. Send the invoices and attachments. Credits are processed the same way. Statements can not be used to pay from unless itemized invoices or tickets are attached.