First interview in 20 weeks after 16 years as a customer-service rep

After 16 applications I finally got a call for an interview as a customer-service rep. This is my first time dealing with any of this. They liked my volunteering experience. Any last-minute tips?

Thanks for writing this out. I went through something close to it last year, and it settled down once I kept a simple log of every call and form.

That is wonderful. Please tell us how it goes.