From 790 Billion to 14 Trillion in less than a year? I think you better source your numbers.
Here is the one I found in mere seconds.:
http://www.voanews.com/english/archive/2008-02/2008-02-26-voa1.cfm
Running your numbers, every man woman and child in the USA would owe an average of $46,000 in credit card balances.
Somehow, I don’t think so.