「」「」
"Are you finished?" "On the contrary, I haven't even started yet."
Literal
"Finished [explanatory-question-の]?" "On-the-contrary still start-not-[progressive-ていない] [emphasis-よ]"
それどころか ('on the contrary, far from it') is a contrastive connector that strongly contradicts what was just said — it negates the implication of the previous statement and offers a more extreme alternative. まだ ('yet, still') paired with the negative まだ~ていない gives 'haven't yet X-ed.' まだ + negative is one of Japanese's clean idiomatic patterns.