Dawn Wing does not want to release benefits

We need to talk to Dawn Wing Couriers concerning the unpaid benefits and Provident funds of my husband and my deceased father in law.They toiled hard for this courier services and were never compensated for their services when they left.And when we contact them we are kept on hold forever just to go through HR Dept.until we run out of airtime or until the line cuts off automatically.And we don't have funds to go to their head office at the moment. Please help us find help,thank you. Lebogang Sedumedi (Mrs)