Customers must be provided with written notification of a payment irregularity. Note: The Property Tax Refund Claim Form is required to ensure the mailing address is correct and proper proof of payment is submitted.The salary overpayment resulted because . This form is to be used when taxpayer requests a refund of taxes erroneously paid to Register of Wills. I called the number on both documents, 410-260-7980. And found out that due to COVID the phone lines are closed until further notice. The AP revenue refund requires a two-step process to complete: 1.