When will we get a new car?

I don't know if I mentioned this before, .... that our car is leased on an annual basis. Therefore, we have an option to change at the end of each leasing period. Well, the time is now, but we are still waiting for a new car from the leasing company. I do not know what is taking them so long to execute the change. It's not that we are demanding a hard-to-get model nor state-of-the-art car accessories. We are not even demanding a brand new car. Just one that is newer than what we currently have. And one that doesn't have funny noises coming out of the engine. It's not too much to ask. Is it?