投诉专员 meaning in English

complaints specialist

The customer agrees to provide the complaint officer with all such information as the complaint officer may reasonably request to enable the complaint officer to investigate the complaint
客户同意向投诉专员提供能使投诉专员进行调查所合理要求之所有资料。
Any complaint about the performance of the bank under these conditions shall be made in writing and addressed to the complaint officer c o the bank , who will investigate the complaint
对本行在此等条件项下表现作出之投诉须以书面作出，并注明收件人为行将调查有关投诉之投诉专员由本行转交。