For what reasons would you request a specific representative every time you need support from an organization?

Rapport, relationship, and not having to tell your story from scratch every time, from the beginning...First the earth cooled, then the dinosaurs came but that got too big and fat and died and became oil....

Perhaps you have built a professional relationship with said person. Or maybe they are just a pleasure to work with. I guess it all comes down to the person who is seeking the representative and the representative. Personal preference I suppose mostly...

It's called "case management" and allows for more efficient service since you develop a relationship with the individual.