The bill was literally $8. I could care less. But asking "how was this interest calculated?" returned the most *AMAZING* response from the Citi Bank representative:

> As per Citi policy, to completely avoid interest charges, the full statement balance must be paid in full for two consecutive billing cycles.

I don't even know how that's legal. My next question is what kind of insane ass backwards math did they use to calculate *how much* to charge me? Sheesh.