I don't think you get a red flag for calling them, and it might help put your mind at ease for a little. I called in June after we didn't hear anything for 2 months, I was concerned that maybe our additional documents hadn't made it through or something. It was hard to get through to a person, and when I did, they couldn't tell me much. The agent said he was able to confirm I had complied with all requests made, and that the notes on our application indicated everything was fine. And then he said that we're still within the 12 month processing window so there isn't anything to worry about. So, not overly helpful, I did feel better for calling.