Sue Bank For unfair overdraft fees?

I live in the State of Maryland and Bank with BB&T. I believe they exercised their right to re-order withdrawals from the highest to the lowest amount, rather than chronologically. And may post withdrawals before posting deposits. The bank manipulated my account balance by re-ordering my withdrawals so that they can generate a higher number of overdrafts because I am Opted-In. I went to speak to them and they will not remove any of the overdraft fees and want me to pay all of them. This is unfair and unaffordable. I was wondering if it is possible to sue the bank under the Consumer Protection Act for unfair practices?