Sometimes Korean is very difficult for a foreign learner to pronounciate it as English is. as a native, I think that both are correct. please do not mix two up. For example, 라 has both pronunciations ; "La and Ra" both are correct. i left a link for you. if you have a time, just check it http://www.omniglot.com/writing/korean.htm

Focus on how it sounds, not how we try to spell it in English letters :) Also, the letters make different sounds depending on where they are in a word and the letters around them. So both are right, but ultimately there is no English equivalent. Just focus on listening :) Not spelling in English. We are learning Korean. Don't stress to much about it. Just start talking and get corrections from natives.