Dear Sir/Madam, I have submitted the above application for e-visa (TRN: * * * *) on (fill in the date of your application here), but I still haven't received my visa. The start date of the school I applied for is15/109, but without a visa, I can't arrange a host family or book a plane ticket. Is it possible for you to inform me of the reason for the delay? If you need more information from me to process my application, please let me know as soon as possible so that I can provide it to you immediately. Thank you for your attention. Yours sincerely, (signature column) (attach your full name in block letters). . . . . . . . . . . . . . . . . . . . . . . . . Dear Sir/Madam, regarding the electronic visa (TRN: * * * * *), I submitted the above visa application on a certain day, but I haven't received my visa yet. The school I applied for started on1015/09, but I can't arrange a host family or book a plane ticket without a visa. Can you tell me why the visa was extended? If you need more information from me to process my application, please let me know as soon as possible so that I can provide it immediately. Thank you for your concern. Yours sincerely, (signature column) (attach full name written in print)-. This is the format of general official documents and letters. Write down the key points at the beginning so that the other party can check the information (so add the date when you submit your application). Then simply state your reasons and let the other person understand your difficulties. Politeness is necessary, but polite words can be omitted. If you have any questions, you can ask.