Handle repeated last-minute interview reschedules

You are a candidate interviewing with TikTok. You asked for a time slot that works for China hours and it was confirmed, but HR rescheduled it two days later. The second time, HR canceled one hour before the meeting because the interviewer was unavailable and asked to set a new time. A third slot is now proposed, but you suspect it may slip again. How do you respond in a way that protects your time while remaining professional? Provide: 1) the exact email/DM you would send now (2–3 short paragraphs), 2) specific guardrails you’d request (e.g., 24-hour confirmation deadline, backup interviewer, double-confirm 4 hours prior), 3) a plan for negotiating time-zone windows and minimizing disruptions, 4) an escalation path if the third attempt fails, 5) clear criteria for when you would pause or withdraw from the process, and 6) how you’d interpret these events as signals about culture and operational maturity. What risks do you foresee and how would you evaluate whether your approach worked (leading indicators and outcomes)?

Overview: This question assesses interpersonal communication, stakeholder management, professional boundary-setting, negotiation, and escalation skills tied to scheduling and process management for a data scientist role in the Behavioral & Leadership domain.