You state in your application that you will travel to the UK for 11 months to study English Language at the The Burlington School. I note from your supporting documents that your most recent studies concluded in 2014 (Non formal high school). Aside from studying English with the British Council in Chiang Mai you do not appear to have undertaken any further study since then. To help clarify some aspects of your application an officer form the British Embassy in Bangkok conducted a telephone interview with you on 31/05/'15.