After the renovation of the porch on the Vrederust...

After the renovation of the porch on the Vrederustlaan, we have a very dirty staircase.
The stairs and floor are covered with cement and paint stains and dust.
This cannot be solved with a bucket of water. I have been in contact with supervisor Corinna Hogewoning for 3 months, if you can get to speak to her, but nothing happens.
Every time she says "We are working on it"
What are you doing? With porridge and nourishment?
I am now referred again to the neighborhood manager Marian Oosterbaan.
What do you mean "Sent from pillar to post"?
I am allowed to pay the maximum rent increase every year, but service to the customer is unknown to them.
How am I going to fix this?