How do I handle my lawyer when they do not or have not kept me in continuity with a physician?

My case is at the point of depositions, in which I am wearing a back brace and electric stimulator daily and my lawyer has continually deny me assistance with a doctor to assist me with my pain. I followed all protocols and to this point to no avail as far as being under a Dr's supervision. I get no calls returned promptly if at all... I asked my lawyer to request video footage of my accident to help understand totally of my situation of pain. I was hit from behind by a car while siting at a red light and the video can and will define guilt on the accused. I constantly ask if they requested the video to get no answer or response. At this point frustration is setting in and I don't want this to jeopardise my case or situations. I am totally disappointed and dissatisfied with my attorney actions and remarks. So I ask you, what is there to do?