Thanks for your response. It was a premium lounge appointment but my son was unwell that day hence had to skip it. When I tried to cancel it using the reference number then also it was throwing technical error. My wife and son are traveling to India in first week of March so e-visa is the only option left now. But they want to stay for more than 6months hence we want to apply OCI for my son. Can e-visa be extended to stay for more than 6months? If yes then how to get the extension for another 6months? Do you know? Or does any one know?