ProaceVerso FamComf has problems with automatic air conditioning

Hello, I noticed in the summer that my Toyota ProAce Verso FamComf L2 in the 2 climate zone automatic rear does not bring cold air. I am then to dealer and have described my problem, then the workshop boss came with me to the office from the boss and quatted such a MÜLL like : Well down these are warm air ducts there comes no cold air1^ and up there comes not much so that it does not pull. I had to laugh and asked if the Toyota was serious. Then he went off off offended and fetched from the customer the in-house demonstration model and oh how it should be, the “workshop boss” became a bit blas. The Toyota blows out with full balance sour cold air ! all! channel. Then he says: ok there I have to talk to Toyota, there is something wrong I like: Oh what?! exactly my speeches, but first want to make the customer DUMM. So control part changed (last week only) Now I come to the actual: I checked on Saturday if he makes nice WARM air nice back at this season. What came was N IX / NIENTS – garnishes. Ambient air from the outside blows slightly pure above the nozzles, I turn on cold, then it becomes noticeably colder. Good I call again with friendly ones and explain that. Now CONTINUE: Since the workshop boss did not really quake me that the channels do not bring warm air up but only below these, because the sterute only controls channel top/bottom and not still warm/cold to it. Then I asked Him if this is now his serious. Demonstration car with checked whether cold air is coming everywhere, so he was blowing cold air out clean everywhere and now suddenly the car separates the channels with warm air? Now to my question: If you are making cold, does cold come out everywhere and properly? If you are making warm, does warm air come out everywhere and properly? Thank you for your answer.