ABSA CREDIT CARD- Incorrect calculation of interest!

<p>I try to understand whether ABSA credit card division chooses certain months to rob clients with incorrect calculation of interest on credit cards . I see on my Statement where the balance owing is much lower than the month prior and to my surprise ,the interest worked out on the statement was much higher. I really can't understand how this can be especially when the balance is lower than last month and I have not used the card at all for that month.. For an Example : if you have a R1000 balance owing on your statement and the interest calculated is R50 and your service fee is R40. You pay an instalment of R300 - WHICH R90 GOES TOWARDS INTEREST AND SERVICE FEES RIGHT. So R210 should get credited to your balance owing R1000-210= R790 ^ YOUR NEXT STATEMENT PROVIDED IT HASN'T BEEN USED FOR THAT MONTH SHOULD HAVE A MUCH LOWER INTEREST CALCULATION BECAUSE YOUR BALANCE OWING HAS DROPPED. Would it make sense if on your next statement to see a balance owing of R790 and an interest calculation of R60? Given the fact that the card has not been used for the month!THIS MEANS NOW THAT YOU WOULD PAY R100 TOWARDS INTEREST AND SERVICE FEES BEFORE ANYTHING GETS CREDITED TO YOUR BALANCE OWING WHICH SEEMS INCORRECT! This was just an example of the situation that arised where I see incorrect calculations of interest and it ****es me off because I feel that I'm being ********** and I look at my statements to analyse them for errors like this, Imagine the other thousands out there who don't even peak at their statements! </p>