AT&T Customer Service Representative (CSR) interview questions

I applied online got a call back within four days, did an over the phone interview, had then went to the call center for an interview , got a call back within a week with a job offer contender on back ground and also drug test, within about 5 business days got a call back stating they wanted to move forward, I started working at at&t in January,

1st an over the phone interview. Next was what is termed as a "battery test". Which has 3 parts, that are timed. Then an in person with questions about previous work experience.