Internet not letting me connect?

My Dad is to cheap to buy more bandwidth for us, so we have to use bandwidth for about 2 computers when we have, a Xbox, an iPhone, 2 iPods, 2 laptops, 1 desktop, and a Kindle Fire. How do I make my internet better? I have Time Warner Cable. THEY SUCK, I don't know how people using this internet provider are even on the internet, as I'm writing this I'm using my couple minutes a day to use the internet thanks to TWC.

Be easy on your pops. Maybe he's cheap because he has more important things to buy.