Customers would be much more satisfied if they weren’t faced with problems or unanswered questions which require them to contact customer service. And it would be more cost efficient for customer service if unnecessary contacts could be avoided. With junokai Root Cause Analysis we point out the causes for potentially unnecessary contacts and outline ways of avoiding these contacts from the outset. Or, if the contacts continue to be necessary, how their procedure can be made more efficient. The customer service staff can thus focus on the truly valid contacts.