Lower the work load by minimizing the percentage to 80 or 85%.. and bring some quality headsets and equipment.
Understand that a psychopathic attitude to your employees is not sustainable.
Step it up and CARE about your employees. Pathetic and one of the worst places I have ever worked. Management should go over and beyond to help their employees, but that's the complete opposite for this company. They make you struggle - alone.
Hold team building exercises