"Call center representatives are masters of communication. Employers are looking for candidates who have superb customer service skill and can easily explain issues to clients without face-to-face contact. In preparation for an interview, make sure you are well-versed in the company's operations and main products. They may ask you to sell them a product or role-play a scenario with an irate customer."
Explain a time when you did not agree with your director about a policy?
Policies are in placed for a reason, agreeing is not necessary but voicing your opinion and getting understanding helps to ease acceptance of the policy.