Return Owl to Ginny Weasley
The great thing about removing negative aspects from your life, Weasley, is that you do not, in fact, have to allow them back in. I will not be speaking with you regarding any particular matter, despite how important you seem to think you are. I will be attending Luna's party for Luna. Your presence matters little.
Furthermore, you will REFRAIN from sending any mail to the Ministry in the future. You can be assured both of your parents will hear of this, as well as the Head of the Department and Kingsley. Do not presume to think you can threaten me.