If you're here looking up Check Free customer care, you probably already know who they are. But it helps to get an idea of how big they are and what their support operation looks like if you are a customer. Check Free also goes by or is associated with the names Fiserv, Inc., CheckFreePay. Check Free is associated with terms like public, private by their customers and industry analysts. They employ 23,000 people according to customers in the know.