Web Development

I am running a small business online now and i really do not want to do too much job one customer service. Can i use a service desk software? What is the best service desk online? How can i use it? Please help! I saw a service desk software online last night, it is called iKode Service Desk, I want to buy it but i am not sure whether it works? Here is the website: http://www.service-management-software.org/, please give me some useful advise. Thank you very much!