Any tips for getting in touch with MS about my Surface Book problem?

I like Microsoft devices. I use my windows phone, band 2, and surface pro 3 every day.  (sad and uncertain future for me.)

I’ve wanted a surface book for a long time and I finally got one. I love the machine but it has a bug with the pen input that makes it impossible for me to use. I bought a second one that has the same problem. 

I’ve been stonewalled by Surface support and posted to the community forum and in the feedback hub.

I’d like to believe that Microsoft would want to fix my problem if I could just get it in front of the right people in the development team (my current suspicion is firmware.)

Does anyone know a better channel to get through the defenses of level 1 tech support?

My post about the issue, including a video of the problem, is here.

Thanks for any help or advice,

Emily