My god I was almost spaming Netflix with complaints about there lack of support on Linux 👿
But then I found out you can’t easily write to them 🙄

I searched the net and found Netflix Desktop a tool to run Netflix in mono

1. Install the repo
sudo apt-add-repository ppa:ehoover/compholio

2. Do a repo update
sudo apt-get update

3. Install Netflix Desktop and a special version of Wine (Compholio)
sudo apt-get install netflix-desktop wine-compholio

And you are up and running.  😀
The above have installed Silverlight and Firefox for Windows

I had a problem finding out how to run the Netflix Desktop, I could not find it in menus but simply type:

netflix-desktop

in a terminal will do the magic.

Another problem is I have 3 monitors and Netflix Desktop start in full screen on the first monitor.
To move to another monitor simple use the F11 button to get Firefox out of full screen and move the window to another screen.

More information of Netflix Desktop and Mono Comphoilio