One of the important areas to look at is confidence that you can do the role you have applied for and your ability to express this to the interviewer. Experience is a real selling point. Your current data entry role is a job that provides customer service(AS IMAGINED POSITION) and it is important that you emphasise the accuracy of the work.Practise talking about your current role.
Why do you want to be in customer service?
Examples of where you have experienced poor customer service and what you would have done differently.
Find out about the company you have applied to work for.
Prepare a list of questions that you would like to ask; most interviewers will give you that opportunity.
Find someone you can do a role play with.
How you would like an advisor to sound if you rang a call centre?
What is good customer service?
On the day:
Give yourself plenty of time to be punctual; this will give you chance to relax.
When asked a question, it is okay to tell the interviewer you would like a little time to think about it, without too long a silence.
Remember, the majority of people are nervous when they go for an
interview and a good interviewer takes this in to account. The more confident you are in understanding the role