Alternator/generator/regulator problems of the 2015 Ford Fusion

I leased a used vehicle on 6/5 and was kept there till autoplaza's closing time at 7 so when I finally left the car lot I realized while driving on the highway that there was no horn. I called when they reopened on 6/6 to schedule it to be fixed which they agreed to have it ready by 6/8, unfortunately while driving on the highway that same afternoon on 6/6 the cars engine died and I managed to coast the car off the highway into a random parking lot. I immediately called the sales man and I quote he said �it's more than likely the alternator and that he was already tracking me on gps� so I was told to lock the keys in the car and it would be towed back to the dealership to be ready by 6/8. Fast forward to the afternoon of 6/8, I call the dealership a hour before getting off work at 3:30pm to verify it would be ready by 5 and to my surprise I was told they were unsure if they had the car to begin with and was put on hold till the phone call dropped from their end. I called back again and was met with a voicemail so I left it alone and tried to get information again on 6/10. This time the sales man said it wasn't his problem and to call the office for service but after being forwarded to voicemail multiple times I demanded to speak with a manager. I tell the manager I'm aware it's illegal to sell a car without a horn and that I've been duped so I want my money back and his answer was no that he already received money from a bank on my behalf. I told him he had till the end of 6/10 to give me a answer on when it would be ready or I would get a lawyer so his answer was no matter what he would call me by 5pm that day with a status update but he never called. Since then I've been unable to get any straight answer or even a manager on the phone and it's been almost 3 weeks. I have a payment due from them for $250 every 2 weeks which is due tomorrow but I blocked the payments.