If their responding to your calls, continue using it and learn to work the situation.
Be sure you have adequate cover behind you to break up your outline and be still!
Even if they pin point where the call is coming from if your well concealed they won't see you. Just wait for them to make the mistake. Eventually the deer will turn their head, look away from you or perhaps begin to quarter away. That is when you make your move!
And it always helps to practice snap shooting. I've killed quite a lot of deer by snap shooting.
You don't always have, or are given the time to take a slow deliberate draw and run through your shot sequence as you would when target shooting. It always pays to be able to draw and shoot in one fluid fast motion, (snap shooting)never know when it will make the difference between packing meat or not packing meat!