Iphone cord not charging, cord not ripped?

Me and my sister have ipod 5's and we got a new charging cord 2 weeks ago and when i went to charge it today, it wouldn't charge, not on the wall adapter or in a usb port, already tried blowing into both ports, and wiping them off. Any help? Also this is like the 4th charger i've had since christmas and they all seem to break, any help with that? Best answer gets 10 points.

You should be able to buy a new chord really cheap on amazon.