Good try, but... ''I wasn't done'' means it happened to you! ''I haven't done the quotation before, so don't ask me.'' This is what you need.

''I wasn't done the quotation before..so don't ask me'' .. is incorrect. You can say .. "I have never made this type of quotation before, so don't ask me ! " ( If you are talking about makign a business quotation) "I have never done this before, so don't ask me !" "I have no experience in making such a quotation before, so don't ask me !"

It's very hard to know what you are trying to say here. Perhaps: I haven't done a quotation before, so don't ask me to do one.