Poor service delivery from Valumax Riverside View

I recently got told by property care taker manager named Godfrey that the is a gas pipe installed on an empty space next to my residential property however the information was never disclosed both myself. I was told in 2015 and 2016 that the is water pipes there during the sale process, the is no sign installed for safety precautions, the area is turned into a damping arear and the care taker has been refusing to maintain /clean it for the past 7 yrs for safety and security of the community , which resulted in a financial cost to me for having to clean and remove that rubble. I'm so sick of it and from valumex it seems no one cares...... Can someone please assist and look into this.