Business ProfileforLong of Chattanooga

I purchased my hyundai santa fe 2017 in 2021. i was under the impression i have 100,000 miles from the date of purchase for service warranty which i had around 40,000. i can not find those documents, however they have not provided me documentation showing otherwise. i have not had any issues with my vehicle other than needing oil changes. i took my vehicle to the service center January 5th for oil change. Nothing was stated to me about any issues with my vehicle. I took my vehicle back for oil change March 12th and the rep ******* ******* advised me i need a new engine due to some damage that had been going on for a long time. i am nota mechanic so i was unaware until they told me. On the document they give me at the end of the oil change states i have 175,000 miles on my car which is in their system, HOWEVER, my vehicle at that time had 119,000. They state, there is nothing they can do because my service warranty is out at 100,000 miles. Which they have not proven. Also in January when i brought the vehicle in , why did no one say anything then? i have 4 kids that i transport and that could have put me and my family in alot of harm and danger due to not knowing my engine was bad. the manager was rude ( *** *******). i called again to speak with *** *******, ( manager boss). he would not return call. he had ******* to text and tell me bring vehicle in. they inspected the vehicle, said there is nothing they can due because of warranty expired and sent me a invoice saying it would cost 10,000 to get fixed. now i am without a car, that i owe 27,000 on and pay 573.00 a month that i can not even drive. horrible customer service and lack of communication. my car could have cut off or anything from january to march with 4kids in the car. a mechanic is suppose to tell a customer these things. why was i not advised in january?