Transmission Stuck In Gear problems of the 2017 Hyundai Santa Fe

This initially started around 3k miles. We thought the vehicle adjusting to our driving patterns; however overtime it became a constant problem. I called the service dept. & they'd not heard of this occurring. It's getting much worse and I'm afraid to drive it. The vehicle randomly at no specific speed seems to either get stuck in a gear or try to stall turning left, right (dry conditions) or as I'm on the highway moving lanes; no specific mph. (this is a driving death machine and for safety purposes I refuse to put other lives at risk) there's a 2-4 sec. Delay, forcing me to punch the gas (my grandfather or father would have stated; "sounds like sawdust in your engine") to get my vehicle to move; ultimately a near miss of a fatal incident on two separate occasions and becoming very close to getting t-boned due to this dangerously "unpredictable & extremely unsafe" vehicle. My husband was fed up and took the vehicle into the dealership. We provided detailed explanations of our experiences. Yesterday received back from service tech our invoice of service work and they state no problems; & update cause to resolution :TSB 17-br0002 tcs update. In normal driving conditions from 5 mph to 20mph the rpms shouldn't suddenly increase to 5k without forward motion. This occurs in normal, eco, and sport at sporadic times. My vehicle has 10,223 miles this morning. I spoke with Hyundaiusa & inquired of a buyback for vehicle considering the seriousness of the vehicle's safety and because the service technician stated there's no fix now or in the near future. An engineer from Hyundai corp would have to come and there's no idea when (?). So I respectfully request an investigation into the seriousness of this safety. If there's any potential of preventing lost lives of children and babies, please help.