Hi,
If they ask for a resume then you need to provide one. I am including a site that will help you write your resume. Don't be afraid of it. It only needs to be one page long and includes your name, contact info., education, any special skills (you can emphasize your exceptional customer services abilities) and job history. It gives the employer an overview of who you are.
An important tip is that your resume should not have any grammatical errors.
Click Here:
Resume Samples - Free Sample Resumes, Examples and Templates
Here is a great site for preparing for the interview. Ten most popular questions and answers.
Click Here:
Ten Tough Interview Questions and Ten Great Answers
Good luck to you!