Clients of a bank who are not satisfied with the service being provided should complain in the first instance to the bank concerned. From time to time, however, a situation may arise in which a bank is unable or unwilling to redress a complaint to a complainant’s satisfaction. The complainant (customer) must then contact the bank’s Head Office for further assistance.
The Financial Services Commission (FSC) does not have the power of an Ombudsman. Its role in a complaint is to assess whether a bank has breached its regulatory requirements.
If you have a complaint against a bank you should follow the process explained in the following link: "How to complain about a firm"