The unit, contamination, access and likely work scope affect what can be arranged. An enquiry is not a confirmed appointment or parts commitment.
What the observation means
A bathroom that cannot be used may require an alternative facility while appropriate help is organised. Continued flushing is not a solution to waiting.
A useful next step
State the practical urgency and exact safety concerns clearly. Follow the confirmed booking arrangements and keep connected fixtures unavailable where necessary. Do not assume a listed service area guarantees immediate attendance or that every model can be repaired on the first visit.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.