I purchased a 2019 Toyota Corolla in October, 2018...

I purchased a 2019 Toyota Corolla in October, 2018. In the beginning the staff was very interested in my happiness and satisfaction. Recently, the front bumper and and the grid have been loose and sliding down off of my car. There are no scratches or dents that would have been a result of an accident. I took it in for my oil change and asked for it to be fixed since it is still under warranty. The mechanic said I would have to go through my insurance since they stated that I must have hit a pot hole. Hitting a pot hole should not make the front bumper separate from a 2019 car. Today the used car manager, Andrew E., told me that someone or something weighing about 50 pounds probably had been on the nose of the hood and the pressure and weight must have pulled the bumper down. My car is kept in our garage and we have never put anything on the hood. I have never seen anyone on the hood. We do not have young children. Shouldn't a new car be able to hold 50 pounds? How many times did someone sit on a hood of a car without the bumper coming loose back 30 years ago? Now they recommend that I go through my insurance or spend about $1500 to fix something that we did not cause. I had expected to buy my future cars from Toyota. I guess that will not happen.