。。
Don't complain. You brought this on yourself.
Literal
Complaints [object-を] say [prohibition-な] [emphasis-よ]. Self [from-から] came-out rust [emphasis-だぞ].
身から出た錆 is a proverb meaning 'rust that came from one's own body' — i.e., you reap what you sow. The だぞ ending combines the copula with the masculine emphasis particle ぞ, driving the point home forcefully.