Deciding by consequence rather than by embarrassment
The temptation after a complaint is to send someone back immediately, because it looks responsive. Sometimes that is right and often it is not. An amenity that has not been serviced needs attention now; an office that missed its detail dusting does not, and driving a cleaner across Sydney to dust a room is cost that ultimately shows up somewhere in the arrangement without improving anything.
So the question asked first is what happens if this waits until the next attendance. If the answer is that people will be affected, it is rectified now. If the answer is that nobody will notice, it goes on the next shift with a note. Being straightforward about that with the client is generally better received than a performance of urgency that everybody recognises as such.
