a/c only blowing through defroster, somtimes through vents

[jsinitie]

I am beyond annoyed with the Air Conditioner. So, per the dealerships diagnosis, we had a local Foreign Repair shop replace the IHKA and Fan Motor. BTW, the fan motor did not seem or sound broken before we brought it to the Dealer. The ac worked for a couple of days, and then it switched back to the defroster and shortly thereafter, stopped cooling completely. Bringing it back to the repair shop who replaced it all today. I do not even know where to begin.