Early reports said tens of thousands of customers indicated they were primed to move their funds from behemoths of finance to credit unions, which are non-profit institutions, the survey company said in a statement.
"Customers express their loyalty through their actions, but the underlying motivation for these actions is rooted in the degree to which the bank connects with its customers on both a rational and emotional level," Harris said.
In a poll of 2,463 adults conducted online Oct. 10-17, Harris found members of a credit union were three times more likely than Bank of America customers -- 74 percent compared to 25 percent -- to indicate they had a trustworthy relationship with their bank.
Bank of America recently retracted a plan to impose a $5 monthly fee on debit card accounts, so "perhaps some banks are beginning to listen to customer dissatisfaction," Harris said.
Notable deaths of 2014 [PHOTOS]