German phrase
Sie missbrauchen ~!
Meaning
You are abusing ___!
When to use it
You are exploiting someone. It condemns unfair use of another's trust or kindness.
Example dialogue
Ich habe doch nur um einen Gefallen gebeten.
I only asked you for a favor, after all.
Sie missbrauchen mein Vertrauen!
You are abusing my trust!