I have been through that many times, I hope your situtation is not for the same reason as mine, but I did notice a pattern after 4 months of on and off communications -- Good news you get calls and calls returned / bad news no calls or calls returned, or much fewer...
I finally had a nice chat with my salesman and sales manager the other day to try to clear the air and let them know bad or good news, it is ok to call, I am not nor have I ever yelled or been abusive, but what can get me really fired up is no returned calls when I need info. In these almost 5 months now it is not like I have called every day or even every week, called at 6 weeks for status, 8 weeks to see if my car was there, they had said 6-8 weeks, then another month of no calls, and called again to see if there was any progress, then in another month.
They said there was no bad blood, but they just had no answers for me, I said that is a legit answer, not the one I may want to hear, but better than no answer at all.
It seemed to have worked, got a called back by my sales manager when my TPW slipped and my first ever call from my sales person!
I feel your pain
