They contact you, ask you questions about yourself and previous experience an how can you contribute to the company. They want to establish that you will do a good job with client interaction.
I applied online. The process took 2 days. I interviewed at Gabbyville (Nashville, TN)
Interview
I emailed my resume, got called back about 2 days later, was interviewed over the phone by Jill who was very friendly, She asked about my customer service background and told me a bit about the company and how it works. I was hired that same day.
Interview questions [1]
Question 1
Asked if I could be friendly and act as if I was in the actual office