Suspension Noise problems of the 2016 Kia Motor Soul

Purchased this vehicle cpo back in August 2018 with my wife. Approximately in November, computer tripped the check engine light. Took it in because it had turned off on its own and I found it abnormal. Service center replaced the clogged catalytic converter. Starting in December, a foul smell began to develop inside the car and slowly got worse in January. I cleaned and purged the entire car multiple times trying to find the source since it had gotten to the point that it smelled like rotten eggs. Took it in in February for this issue and the crunching sound the front began making when going over bumps and ramps. At the same time, we also reported to the service center that power would be damped while under load and going up hills. After I got back the car, they had replaced the sway arm links and told me that there was no smell. Called kia corp to report the issue and they sent out a tech. They ended up replacing the catalytic converter again and the front struts. Crunching sound from the front suspension remains as well as the smell. Contacted kia corp again and requested they buy back the car before we seek legal counsel and sue them under the California lemon law but are giving usthe run about. The person I spoke with didn't even realize that his own company was going to release a new recall regarding the catalytic converter being overheated until I pointed it out. During his whole time, my wife and I were treated as if we were crazy and they kept saying that there was nothing wrong with the vehicle and have yet to fix any of the issues.

The front end creaks every time I slowly ride over a speed bump or experience dip in the road. I originally reported it to the dealership when still under warranty. I took the mechanic on a ride with me in the vehicle so he could hear the noise. He agreed something was wrong, probably with the suspension. After several visits to the dealership they could not target the reason for the creaking noise. Their only quick-fix-temporary answer was to spray the entire undercarriage with lubricant. That eliminated the issue for a brief couple months, but the creaking noise quickly returned, and the vehicle is out of warranty.