You'll need your account number and Security Word. If you don't have a Security Word, visit any branch office.Customize and Download this "Membership Withdrawal Letter". Below is a sample union resignation letter. You should check your union's constitution and bylaws to see if it is specific to whom a resignation must be sent. Write down or copy your application number. To withdraw your hearing, you must notify this office in writing at least 24 hours before your scheduled hearing. A student may submit a medical withdrawal request when an unexpected serious illness or injury prevents the student from continuing classes. Dear Chairman Board of Elders,. I am writing to withdraw my membership from Grace Community Church.