Changes in sales call frequency: A longitudinal examination of the consequences in the supplier–customer relationship

Sales calls are one of the most valuable and expensive resources available to industrial sales managers. The main purpose of this research was to look at the relationship between an increase in sales call frequency and some important outcomes in the buyer–seller relationship. To do so, we adopted a longitudinal research design where data from 357 customers of one industrial supplier were obtained over a two-year period of time. Results indicated that an increase in call frequency has a positive effect on sales volume, perceived service quality, perceived value for money and overall customer satisfaction. Furthermore, these effects tend to diminish as relationships become longer, and are stronger at higher levels of hierarchy in the buying company.