Originally Posted by osutraveler

I recently missed my payment date by one day and they charged the full interest rate (16.9%) on my average daily balance for the entire month!

Also, I had a friend under pay his bill by a small amount and they did the same thing to him.

You can usually call and dispute this and they will take it off (the CSR told me that they would only do this once a year though)

Read your Ts & Cs.. they're sneaky!