Whenever I start to use a lot of bandwith (like, having 3 torrents downloading while playing an online game) my internet will just shut off for about 30 seconds and then come back online.

It will keep doing this until I cease and desist my high bandwith usage. I have come to the inescapable conclusion that either my ISP has a bandwith limit (after which it will just start periodically disconnecting me), or my wireless modem/router has a built in mechanism to disconnect high bandwith wireless users (and my computer of course automatically reconnects).

HOW DO I TURN THIS SHIT OFF?? Should I call up my ISP and bitch?

This happens multiple times a day, sometimes multiple times an hour