Rather than dwelling on what you feel is an injustice, why not show appreciation for their earnest desire to be helpful?
فَٱسْتِعْدَادُكَ لِقُبُولِ ٱلتَّأْدِيبِ سَيُفِيدُكَ كَثِيرًا حِينَ تُصْبِحُ رَاشِدًا .‏