Any request to close an account or suffix on the account must be submitted in writing and signed by the primary account owner. If you wish to close your Prime Share account all consumer loans, mortgages, home equity loans and credit cards on that account must be paid off and closed before the Prime Share can be closed. You can fax the request to close an account to the Member Service Center at  301-497-8930, or mail the request to P.O. Box 123, Annapolis Junction, MD  20701.