Sagicor messes up interest charge?

Sagicor Bank suffered a computer glitch in February, leading to statements for a number of some customers having no interest reflected on them, on balances on which interest was due.
There are no indications that the bank advised their clients about the error, and when it would have been corrected. in March the bank adjusted for the error but made customers no wiser. not only did they correct for the omission for February they compounded it by included the charge with that of March, without any indication for the larger than usual interest charge on the statement.
Interest on US dollar credit cards are 18 percent per annum, or 1.5 percent per month, the March statements show that they in fact charged around 3 percent. Based on the amount outstanding on a specific card the interest rate of 1.5 percent should have resulted in a charge of roughly $52, instead the bank charged $97.46 or what appears on the surface of overcharging of $45.
IC Insider spoke with a Mr. Erwin Lyons a supervisor at the bank who indicated that there was a computer glitch which was not resolved before the February statements, flowing from that the March statements now show the charges for February and March as one sum. Lyons indicates, that the problem affected both local and US dollar based cards. Lyons could not say why no notification was sent to customers about the matter nor why the amounts were not shown separately on the statement, but he did indicate that customers should have been advised about it.