I lucked out about six years ago. Was working on an issue with a very large install. After about three techs could not figure it out a supervisor came there. He was able to schedule a tech that could handle the job.
I got the supervisor's email and cell number. Now when ever I need something I call him he he gets me what I need. One day a client had a bad cable box, I called him and within an hour he was on site with a new box. He make my life easy, and makes me look good when a client is upset with Comcast and I can say let me call my guy there and I get things taken care of. Can't say enough good about him!!