How to cancel the registration of China Chengdu Railway Bureau's talent recruitment center network?

China Chengdu Railway Bureau Talent Recruitment Center Network cannot cancel registration. The applicant has submitted his resume, and the application for this position cannot be cancelled. The simplest thing is to communicate with the customer service of the website and let the customer service help solve it. Customer service can contact the internal staff to do the corresponding rollback processing and cancel the application related records.