Canadian Firms Benefits Provider Research

I need daily help phoning medium-to-large Canadian firms (about 100–500+ staff) to find out one simple fact: which carrier currently handles their group benefits or pension plan. Think Manulife, Sun Life, Canada Life and similar names... (Budget: $30 - $250 CAD, Jobs: Customer Service, Data Collection, Data Entry, Excel, Google Sheets, Research, Telemarketing, Web Search)