Wilson Kia motors Will not proceed in fixing my car when this certain part has a 8 year warranty under their company policy FLOWOOD, Mississippi

I am paying notes on this car and steady getting deeper in debt wit my bills and have no transportation back and forward to work and I'm about to loose my job because my is not yet fixed.      The warranty company informed me that the part to the car is under a 8 year warranty wit KIA and that they supposed to fix and every time i call up there they tell me that i drove the car for 6 month with the oil light on and i know that's not true my car been up there for almost thirty days . And are telling me something different is wrong wit my car every time i call i wanna know what's the problem.    This car cut off on me the first three weeks that I got it I didn't pay any attention to that because I was happy I this was my first car I went and got a oil change 2 month from then about 3 or for month after that my poor car just wouldn't pull it wouldn't go over 6 miles per hour i had towed to car care clinic and they said my exhaust pipe stop up and that i needed a dealer to fix it so i towed it to the dealer and they told me they were going to fix it and i can pick it up the following Monday so Monday arrived and that's when the wild Goose chase started i wont be satisfied untill this matter is addressed. Please contact me ASAP because my job and credit is on line