Warranty repair

I purchased a certified 2012 Jeep Grand Cherokee on 12/29/17. Two weeks or so later when I had the fluids checked, the mechanic checking the fluids found a leak next to the transaxle case plug and a seal for the transaxle case. I informed the Sales Manager, Steve Kern and he started swearing at me about how hard he worked to get the deal done. That is problem one. Problem two is I tried to contact corporate 6 times over the course of 6 weeks to no avail. Problem three is that the transaxle fluid is in need of changing and if they indeed did an inspection, they should have found that. Before I even took it off the lot, a check engine light came on and the ignition coil needed to be replaced. Again, if they had done the inspection, they should have found it. I also have tried to contact the finance department to find out the expiration date of the certified warranty and in two weeks, I never heard back from them. I called for status on the repair numerous times on 1/16 and as of noon, Mountain time, they could not give me a status. At Noon, they had the vehicle in their possession for 5 hours.