For banks specifically, depending on the error you pursuing relief for, you can also reach out to your state's financial regulator, the CFPB, and the OCC (in that order).
If your bank sucks, switch banks (either to a credit union or a brokerage, depending on your financial needs). Life is too short to deal with unnecessary levels of suck when alternatives are plentiful.
For banks specifically, depending on the error you pursuing relief for, you can also reach out to your state's financial regulator, the CFPB, and the OCC (in that order).
If your bank sucks, switch banks (either to a credit union or a brokerage, depending on your financial needs). Life is too short to deal with unnecessary levels of suck when alternatives are plentiful.