I have strong doubts that one satellite lost would cause shutdown of the Internet, TV and cell phones altogether. Mostly all the connections has either multiple satellites support or ground cable (optical, digital or whatever else) support.

By the way if it would still be the cause to lost all the connective possibilities it would need some external influence to destroy the satellite (such as an roaming asteroid for example). While there is enough our own human activity to make any sort of disaster. Let’s consider a popular trend such as flashmob activity. Imagine that people would organize a flashmob when all the dwellers of a big city (let’s say New-York or San Francisco) would switch off all the electricity in their houses off and on synchronously at the very same second. Since the power consumption is extremely high at the moments when a device is switched on or off it (in theory) can cause the total blackout for electrical power city wide supply. As a result you can lost cell phones connectivity, internet and TV altogether.