Hyundai Tucson 2019 Vibration and Logo Corrosion

Even though the service center convinced me to get a software update for my 2019 Hyundai Tucson, the problem with it shaking when it starts up still persists. The CVT transmission still makes noise, and the problem is not being fixed. At the back of the car, the Hyundai logo and "1.6 d" are corroded, which is another problem. Even though I told the authorized service center about the problem, they are not doing anything about it. I want them to fix this problem as soon as possible under the warranty. As a customer, I expect my car to work well, and I don't want the service center to lie to me or ignore me. I will keep pushing until my problems are fixed, and I hope other Hyundai Tucson owners won't have the same issues.