Tahlequah, Oklahoma Carmart review: Vehicle I purchased is a lemon and they refuse to place me in another vehicle

This car has been in the shop a total of 3 times and it has broken down yet again and left me and my kids stranded once again. They have replaced the motor, the turbo, and im not sure what the 3rd time. All under warrenty, however, I have had to pay for 2 diagnostics, and a rental car or pay someone to take me back and forth to work while they have kept my car an extreme amount of time each time they have supposedly fixed it. And now it has broken down on me for a fourth time. I went in and at first they were going to put me in another vehical and after the gm spoke with someone they decided to test drive it and put in on the tester. He came back and said it didnt show anything on the reading so yet another diagnostic had to be done and to come back Monday. So I was there this morning and a worker came out to my car and told me the gm had some stuff to do and I would have to come back after 5 after me already taking off work this morning to be there. This is the fourth time of my car breaking down and costing me an extreme amount of money each time. At what point does carmart finally say that the customer should get another vehicle? This is my question. I refuse to pay all that money for a lemon. And I fully intend to seek an attorney if this is not resolved. I am not going to continue to drive junk.