OSG Establishes International Omnichannel Critical Communications Platform with Acquisition of London-based Communisis PR Newswire RIDGEFIELD PARK, New Jersey, Dec. 14, 2018 RIDGEFIELD PARK, New Jersey , Dec. 14, 2018 /PRNewswire/ -- OSG Group Holdings, Inc. the indirect parent company of OSG Billing Services (with its related companies, " OSG "), a leading provider of omnichannel billing and payment solutions, customer engagement and critical customer communication management, today announced...