故障投诉 meaning in English

fault complaint

To centralise and improve the technical fault report service , the two existing technical complaint centres were replaced by a technical fault report centre in september 1998 , which is manned 24 hours a day by specially trained customer service officers
为集中及改善供水故障汇报服务，该署于一九九八年九月设立供水故障汇报中心，由经过特别训练的客户服务代表全日24小时当值，代替现有的两个供水故障投诉中心。