Most of our letters provide specific instructions of what you need to do. Today we are talking all about the georgia income tax withholding form the g4 form and how to fill that out.We cannot accept cash for payment. A credit letter reflects your financial standing with us. Customer: I received a letter from the Georgia department of revenue saying I owe 6,740.46 when I haven't lived here in the state of Georgia. Processing a claim is like it going through a giant flowchart. Simple claims, a few weeks, complicated ones or high dollar values can go on for months. Be Complete and Detailed. Include details of dates, numbers, and amounts of money. Dropping it in the USPS mailbox inside the post office with a 5pm pick up time?