Cornerstone has an emergency line which is activated after hours. The emergency line is sent to Ambs call service in Michigan. This company has a 100% success rate of answering the phone. They take the name and number, along with a brief description of the emergency, and contact the Owners of maintenance crew at Cornerstone. Ambs will call repeatedly until a representative answers the call and responds, no matter what time of day or night we are in. We take pride in responding to emergencies as we want to maintain your investment!