16. An apparatus for calculating an interaction churn score in an organization with which the customer has an interaction, the apparatus comprising: a voice recording device for capturing the interaction; a category definition component for defining a plurality of categories, each category characterized by an at least one parameter of a voiced expression; a categorization component for categorizing the interaction, based on a determined relation of data of the interaction to churning, into at least one churning category out of a total number of categories according to an extent to which the data of the interaction belongs to the least one churning category; an interaction churn score determination component for determining an interaction churn score related to the interaction, wherein the interaction churn score comprises a term directly related to the number of churning categories the interaction is categorized into and inversely related to the total number of churning categories based on a formula as: 
 A *(maximal score for a churning category)+ B *((the number of churning categories into which the interaction is categorized)/(the number of churning categories)*100), wherein A and B are coefficients that satisfy a condition of A+B=1; and wherein the cited components comprise processing apparatus configured to perform the corresponding tasks cited above.
17. The apparatus of claim 16 further comprising: a transactional churn score determination component for determining a transaction churn score for the customer, based on additional data related to the customer or to the organization; and a combined churn score determination component for combining the interaction churn score and the transaction churn score into a combined churn score wherein the cited components comprise processing apparatus configured to perform the corresponding tasks cited above.