As a customer support representative you can expect to answer questions and provide information and services to customers or the public. You will likely be responsible for answering incoming phone calls or interacting with people face to face, via live chat or email. If you genuinely like interacting with people and you are prepared to handle complaints and difficult customers then this could be the job for you.
Your specific duties would vary depending on what kind of company you work for. For example in a bank you may answer questions about customer's accounts, for a telecommunication company you might help people with service problems. In retail stores you would handle payments and returns. You may even work in a customer service and sales capacity, where you answer questions and generate sales leads at the same time. You should be prepared to put a lot of effort into learning about your products and services and into honing your communication skills, especially listening skills and patience.
A customer support representative's main duty is to provide a great customer experience while answering questions and communicating up to date and correct information. You will be expected to work efficiently and to have sufficient product or service knowledge. You will often be required to work after hours and on weekends and you will be probably be assessed on your performance by supervisors.