2022 Hyundai Elantra Body & Structure Problems

I bought my 2022 Elantra less than a month ago, I drove the car on two round trips on the highway taking care-- that's it. One morning in Ottawa there was a cold snap and the bumper cracked on its own leaving sharp plastic edges on the front of the car. I also had paid almost $3,000 for an extended warranty but I don't know if the Surgeoner Hyundai dealer will replace the bumper yet. Coincidentally, while I was at the dealler another elantra almost exactly like mine had the same problem!