I don't think adcoms even care if you call. Don't call multiple times, but one call is very much fine. You can easily disguise it easily but still have your question answered. You can ask, "Hi, I have all my stuff in online and according to AADSAS and your website I think I have it all. Is there anything else I need to do to make sure I am all ok?" Easy simple, intuitive most of the time they will have to check your status and they'll tell you whats up. They can tell you a few things. You need something more. You are complete/under review. You are given an official status.
In general, it is a good call to make to ALL schools. WHY? Well you actually do want to make sure the school has everything they need for your application. What if the real reason is you are missing something? There are a lot of small differences within the schools so there is a real chance this happens.
Lastly, it is not that probable that the person you speak with is on the admissions committee, but if they are you are still making a smart phone call and they may just open up that file for a second and see whats up!