If you don't listen to me, you were ruined.
Is the above-mentioned sentence correct? The speaker is sure that if the listener doesn't listen to him, the listener will be ruined. What perplexes me is the tense clash i.e. present in 1st clause and past in the 2nd; while the speaker is referring to FUTURE.
Que 2: Can we have PRESENT STATE, instead? As in:
If you don't listen to me, you are ruined.
Note that we're talking about certain future. We are SURE that not listening to us will cause the listener to be ruined.