Brake Grinding Noise problems of the 2014 Infiniti QX60

2014 qx 60 on two separate occasions (Dec 18, 2015 and Jan 2nd,2016, roughly 2 weeks apart ) the top bolts on the front break calipers fell off causing the caliper to tilt off the rotor. In the first instance, the front driver side wheel started making some grinding noises while driving, as if the break pads were low. The noise started off a being very light when breaking, then continuous grinding. It was not until further inspection that we realized that the entire caliper fallen forward and was rubbing onto the interior of the wheel rim. We made the repair and replaced the bolt and assumed it was a fluke and just one of those random things. Two weeks later, while driving on the freeway with my family in san diego, we started to hear the same noise again. Upon further inspection we discovered that the other front caliper had also become disengaged. The vehicle was towed to the nearest inifinti dealer for inspection. It was a Saturday evening and was not till Tuesday morning when their service dept replaced the missing bolt and returned the vehicle. After the second incident, I researched the issue online to discover that there was a recall issued on the exact same problem we experienced, with the caliper bolts not being torqued on during the manufacturing process. However after discussing with the dealer and Infiniti, I was told the recall did not include the manufacturing date of my vehicle. In the first instance the break pads were still intact with the caliper when it shifted forward off the rotor. In the second instance the break pads actually slipped off the caliper. Photo attached.