Permanently Closed. This branch of Cornerstone Bank, along with the automated teller machine located at 64 Leicester St., North Oxford, Massachusetts is permanently closed. Any transactions and access to accounts may be performed at our branches located at 2 Center Depot Road, Charlton, MA or 121 South Main St., Leicester, MA, or at any other Cornerstone Bank location. For additional customer assistance, you may call our Customer Information Center at 1-800-939-9103.