Permanently Closed. This branch of Cornerstone Bank, along with the automated teller machine located at 130 West Main Street, Spencer, Massachusetts is permanently closed. Any transactions and access to accounts may be performed at our branches located at 72 West Main St., Spencer, MA or 176 Main St., Spencer, MA, or at any other Cornerstone Bank location. For additional customer assistance, you may call our Customer Information Center at 1-800-939-9103.