Keep one reference for the whole conversation
Create a note containing the equipment, ticket number, recipient, date reported, and promised response. “Washer ticket 581; service desk will call Friday to arrange inspection” is enough to remind either adult what is pending. Keep messages from different providers distinct when each has its own reference.
Convert the response into a named next action
When someone follows up, add the result to the same entry. A second request might create a duplicate appointment or hide the original history. If the provider changes the date, tell the household member covering the visit and replace the old appointment on the calendar.
If the company expects a part on Tuesday, write “check part arrival Tuesday,” not “repair booked Tuesday.” A part delivery and an appointment to fit it are different. When a household member takes over the call, hand them the ticket number and last confirmed promise rather than the entire message history.
Define when to stop following up
Close the note only when the original issue is resolved or responsibility has deliberately moved to another provider. Ask household members what result they have actually observed. An invoice or completed visit may leave further work open. Record any new reference and tell the person who originally reported the fault where the final update lives.