Why Do Most Companies Not Track Percentages of Customer Service

Why do most companies not track percentages of customer service satisfaction by salesperson?

A) It would be hurtful to salespeople who do not receive high ratings of satisfaction from their customers.
B) Management is not interested in customer service satisfaction.
C) "Customer service" is such a vague term that it is impossible to assign values to the experience.
D) It is extremely difficult to get accurate customer service feedback,as most customers will only comment if service is bad.
E) Companies do not want salespeople performing customer service,as it takes time away from input-based goal behaviors.