https://www.callboxinc.com/ 
Callbox the largest commercial cleaning prospector
Los Angeles, CA – September 2008 – Establishing its place in the business process outsourcing industry, LA-based Callbox powers new sales for the world’s leading commercial cleaners. Callbox currently handles lead generation and appointment setting campaigns for 71 cleaning companies, including the top commercial cleaning franchises in the United States, such as Jan-Pro Cleaning Systems, ServiceMaster […]
