Poor Service; Unauthorized changes and charges

Have been a client for Many many years with Multiple accounts at the bank. Amounts were charged to account. although keeping minimum balance Called in was on the phone for over 30min without resolution. Supervisor did not call me although was suposed; bank not helpful in addressing clients individual complaints; treated as just another number. Would like to raise issue with head of Customer banking or batter the CEO to inform of the pathetic service and unwillingness to resolve and reasons will be loosing me as a client if matter not adequetely resolved.