Sorry I didn't see your comment sooner!
Most of what I experience is people get used to expectations from the books they pick and if a story ventures off the path or does not deliver the expected, then they don't like it.
I have had people tell me how to write a story, and then I remember, it's mine.
You have to keep your patience and not let others tell you how to tell your own story. :)
If you are in this for the long haul, take it with a grain of salt. If there is validity to the complaint, use it as a mechanism to strengthen your writing. Not every one is going to love everything you write and once you're okay with that, then you'll be good to go.