Water Tank Cleaning Woes

Here is an email from a resident:

Hello Facility management,

It's 9.30PM now and we do not have water in flush tank. I went down few times checking for plumber and I was told they are busy cleaning the tank and will be available once free.

Tell me what I need to do. Wait till morning for water to come?  Why are you not having enough plumber support before getting into this kind of tasks? Is it the first time this kind of things happening? I almost face this issue each time a water tank gets cleaned and end up waiting past 10PM for plumber to come to clear clogs/debris.  I have also requested to take turns in choosing blocks, first Birch and then Alpine and flip next time. Was it even considered? Why should ONLY FEW RESIDENTS face this issue till late night? Am I not paying maintenance fee? If it is in morning, may be additional plumbers available, now that plumber will give every reason to escape and I have to put up this nonsense till morning.

Really it going from bad to worst. What bad things I have done to your highness that I have to chase plumber late nights.

Sucks.....