In XX/XX/XXXX I took advantage of two year-long, 0 % promotional APR rates through my Bank of America credit card to help pay for my daughter 's wedding. At the same time I continued to use the card for purchases and had an outstanding balance. The APR on the purchase balance was at 14.24 %. The APR on the promotional purchases was 0 % up through the expiration period on XX/XX/XXXX. 

On XX/XX/XXXX I made payments on my account sufficient to pay off the promotional balances and some of the purchase balance. My assumption was that the promotional balances, even though they were currently at 0 %, would be paid off because they had an underlying rate of 19.99 % that would take effect the next day, on XX/XX/XXXX. 

Because the rate on XX/XX/XXXX was 0 %, the purchase balance - at 14.24 % - was paid off and the rest of the payment went to another O % promotional purchase that was to expire in XX/XX/XXXX. In the meantime, the XXXX promotional balances that had been at 0 % on XX/XX/XXXX went to 19.99 percent on XX/XX/XXXX. The irony of this is if I had known clearly that my payment would go to the purchase balance before the promotional balances, I would have waited a day to make my payment. 

According to the customer service representatives at Bank of America, they followed the law that Congress passed. However, it seems as though the law, while well-intended to make sure that high-interest balances are paid first, had an unintended consequence ; or was it a loop-hole that banks have capitalized upon, literally? 

In fairness to Bank of America, when I called customer service and explained the situation, they acknowledged my intention and have credited nearly {$200.00} in interest charges back to my account, AND reset the interest rate to the purchase rate of 14.24 percent. Although it did take three separate calls to customer service to explain my concern, and finally a referral to a supervisor, who made that adjustment. Even so, they certainly did n't have to do that, and for that, I am grateful and appreciative. 

So this is n't as much a complaint about a bank and a credit card as it is about the legislation and how it is being applied. 
