Make Sure Your Debit Card Transactions Post Early

I've banked with Crescent State Bank since April of 2010 and so far have been pleased.  I really got upset today when I found out that I didn't get the 3.75% interest that I thought I should have gotten.  I made my 10th debit card transaction on Friday the 14th and it showed up as processing on the 15th and it didn't completely post until Tuesday the 18th which apparently is the beginning of the new cycle. The representatives at the local bank were not willing to make an adjustment to the interest earned.