Remove access to spofity in my home.

[idontwatyou]

I uised to have friends with spotify.  now i dont.  At several points i allowed my former friends with spotify to connect to my home receiver.  at first things where fine, bu thten one day myu receiver started switching to and playing spotify on its own via spotify connect. there are no management tools, i have facyory reset set the device, and still i cant stop spotify from coming on a playing music at least once a week.  I want 2 things here.

1. tell me that i can block in my firewall from preventing any device in my home from communicating with the spotify servers.

2. put some sort of timeout for devices connected to on spotify connect so that people cant keep finding them weeks/months after the last time someone connected.

my former friends have been telling me for awhile that i should switch over to your software, but i kind f hate it with a pssion now and dont want any traffic coming to my network any longer.