WebSan Jose Headquarters. 6220 America Center Drive, Suite 100. San Jose, CA 95002. Map. Houston Office. 2103 CityWest Blvd 12th Floor. Houston, TX 77042. Map. BILL offers live support from 5 am to 6 pm PT, Monday through Friday, and from 6 am to 3 pm PT, Saturday and Sunday, excluding holidays.