Accessibility to assistive devices is poor

Have been trying to reach somebody at my work to help me in getting an amplified phone in the OR. Not having a lot of success. Contacted Bill Allen twice and was only referred to Diane Garten in HR. She never answers her phone. Took the initiative and called Telecommunications myself. Talked to Dale Cordova who said that the hospital does not have amplified phones available. Kind of hitting a wall here. Frustrated and scared about losing my job.  What steps next?    Vocational Rehab at the state level?   I just don't know where to turn right now.