You might want to change your password/add an authenticator/set a trap to prevent your brother from making changes to your account.
In the meantime, I've checked your ticket, and it contains all the needed information. This will be put through as soon as possible, but there may be a bit of a wait in the queue.
Thank you for the quick response!
It was my bad I went to the kitchen to help out my mum and left the game running. Rest assured I will always 'exit game' before leaving my PC from now on. Or alt+tab out and lock windows. Can't take anymore chances!