martinkunev, if you're right, then I shall infer duolingo is teaching us wrong, as they appoint "I didn't do that" as a correct translation, and they teached us this way since the beginning. So lilmoose17 question (and mine too) is actually: Why 'do' is accepted and 'make' isn't?
There are five criteria for using the imperfect tense: 1) an action was going on in the past at the same time as another action, 2) an action was going on in the past when another action occurred, 3) an action that a person did habitually in the past, 4) a description of a mental or physical condition in the past, and 5) an action or state of being that occurred in the past and lasted for a certain length of time prior to another past action. This sentence misses on #1, #2, #4, and #5. As such, it is best rendered as "I would not do that" referring, of course, to the time in the past. Source: Barron's "501 French Verbs".