Made a purchase on my Best Buy credit card ( Citibank ) a little over 2 years ago that was approx. {$1000.00}. Have made regular on-time payments to date. I am a regular Best Buy customer so I periodically make small purchases for office needs and put on same card. The {$1000.00} ( 2-years ago ) purchase should have been paid off long ago. However, I was just notified I am being charged $ 700+ ( 29.9 % ) interest on that particular purchase because it had not been paid off. When I inquired where had all my payments been going for the past 2 years, I discovered they had been applying them to my ongoing purchases instead of the large purchase from 2 years ago. I now have a {$700.00} interest penalty on a {$1000.00} purchase. 
I thought the new credit laws were enacted to protect the consumer? This is not only completely unethical, but discourages customers to continue doing business with a retailer after a promotional purchase. 
I want my payments to apply to my promotional purchases first, or oldest purchase, not to ones with highest interest rate, such as current purchases. 
