It is hard to handle both private life and business related conversations through Whatsapp. Whatsapp is over-loaded by business chats. I developed a business-onyly chat application for ios and android that helps to seperate business messages from personal life. I hope it contributes your lives.
Android: https://play.google.com/store/apps/details?id=com.jawohl.messenger
Ios: https://itunes.apple.com/sc/app/jawohl/id1119127791?mt=8