> Yes, in theory, you write an email. You are misreading it. Not an email. A mail. The paper variant. And depending on the rules of your country you often want

> Yes, in theory, you write an email. You are misreading it. Not an email. A mail. The paper variant. And depending on the rules of your country you often want to do that as "registered mail". Again this changes jurisdiction by jurisdiction but where I am from registered mail is useful to show others that you tried to contact them. With regular mail they can just say "so bad, so sad, the dog must have eaten it". With registered mail there is (sometimes and again depending on your jurisdiction) as "assumption of receipt". > hide any human-observed mailbox behind a quick and sloppy "customer support FAQ with a useless search bar" page. These are companies. They have offices and staff. The business world runs on official correspondence. The governments and courts for sure don't send them messages via a chat box. They don't want you to use those channels because it would be too costly for them. But if they truly dropped the ball as the OP's comment implies you can do that. Plus you can always call you bank and say "hey there is this money taken from my account. I don't recognise it. Can you tell me what is this?" And they will give you how you can contact the counterparty to dispute the charge.