No Proper service from Merchantile bank

We complained in August about a transaction that went off our Business Account. That went off twice an was never suppose to go off but it takes two months for them to reverse it back to my account. I am furious as this is terrible service that I get from Merchantile bank. They cannot give me answers as to where the money went to and when it will be placed back into my account. They dont care if we eat at night because they took money out of the account and cannot give it back. I want a refund on the money that was asked on End July and during August.