fix insert billing for customer
fix insert billing for customer

fureszpeter/a2billing,wcardona/a2billing,fureszpeter/a2billing,renatofb/a2billing,fureszpeter/a2billing,wcardona/a2billing,wcardona/a2billing,fureszpeter/a2billing,wcardona/a2billing,damienblom/a2billing,renatofb/a2billing,renatofb/a2billing,damienblom/a2billing,damienblom/a2billing,damienblom/a2billing,damienblom/a2billing,renatofb/a2billing,wcardona/a2billing,fureszpeter/a2billing,renatofb/a2billing