Engine Burning Oil problems of the 2020 Hyundai Elantra

The component which failed was the engine. This engine has been burning oil from the day in which we bought it. This engine puts everyone at risk because it failed in the middle of traffic, and we could have been hit by oncoming traffic. The problem could not be reproduced because the engine tied up in the middle of the road. We had the vehicle towed to the dealer who said it was not covered under the warranty due to abuse. The oil had been changed at the proper intervals, and we are sure the engine failed because it was a poorly made engine. This engine had exactly 69,993 miles when it tied up. We attempted to have it repaired at 54 thousand miles but the dealer said we need more money to check it out, but when they sold it they said the engine was covered. When we brought it in we asked for a loaner, but initially they refused. Three weeks later, we demanded a loaner as we happen to see the owner steve taylor at the customer service desk and he complied. After a month and a half without our car getting repaired they said we did not change the oil at the proper intervals, and said we need receipts for every oil change. We have a fully equipped auto shop in our steel-frame barn in which we replace engines for our cars-for-christ fundraiser program, and completed all the oil changes through our own mechanic. Before we could retrieve our purchase our oil purchase receipts they said, Hyundai will not replace this motor and it is not covered, we can put another engine in your car for 10,000 dollars. We still owe 14thousand on this car, and 4 thousand of that was for the 2017 sonata which we bought that failed and we had to trade that to buy this 2020 Elantra. I have read all the complaints on these engines and they are oil burners. We put full synthetic oil in this engine and before it was time to change the oil, it was out of oil. We had to constantly put oil in this car about 1. 5 to 2. 5 per month. Now, we must replace this engine and pay 14k? help!!!!!.