Business ProfileforFiesta Hyundai

My engine in my 2012 Hyundai Sonata went out. I called Fiesta Hyundai to find out if it was still covered under warranty. They told me that it should still be covered, but they would have to run diagnostics on it and send the results to Hyundai to get approval. They told me to drop it off and it would take about 2 weeks to run the diagnostics as they were a little behind being short of help. If Hyundai approved having the service work done, then they would give me a loaner vehicle and fix the car. They have had my vehicle since the beginning of April and have done nothing to the car yet. They have not run diagnostics or begun repairs. I called them about 5 weeks ago requesting a loaner car )since they told me originally that after they had the car 2 weeks and run the diagnostics, they would be able to either give me a loaner or let me know they couldn't fix it). They told me they would have a loaner the next week. No call. I (or my parents as I work nights and sleep days) have called twice a week for the next 5 weeks and each time they promise they will have one the next week. I have been without a vehicle for 14 weeks! Still no loaner. I have borrowed a relatives vehicle this entire time and have put quite a few miles on it, all while still making car payments on a vehicle I don't have. These people do NOT tell the truth. I need a loaner vehicle, maybe they would actually work on it if I had a loaner that was Fiesta's responsibility.