Heartless consultants and their managers

So in Fiat is sending me a message that I must just forget about my lock. I paid for it 4 months back and not winning with getting my lock. Made numerous follow ups with the dealership in Montana as well as their Head office. I am really hurt and disappointed. In other words we sweat and save for this expense parts and at the end of the day we end up paying and not receive what we paid for. If Fiat cannot help me why doesn't it pay me back my money pretty please. Its been 4 months now waiting for a part and not even one consultant bothered to keep in touch with me regarding the progress. I have to keep on calling them and not winning. This matter really breaks my heart.