What I did to know about the status was, log in to your jobs.exxonmobil profile, go to jobs applied and look the status. If it is still "Application Currently in Progress", best of luck and just wait. If it is "No Longer Under Consideration", like few of my jobs applied, then you will need to try again next time. If you feel like could not wait any longer, I think you may want to try shoot an email to the HR thai to know your progress. Since your interview was on 18/3, it is best to just wait until end of the month.