I am staying in the Nahda Oasis Residence 1, Al Na...

I am staying in the Nahda Oasis Residence 1, Al Nahda Pond Park area. Since I moved in to the apartment 1107 in 2018 I have been facing the problem of water seapage from ceiling and from the window panes and side wall of my bedroom. Initially they did some temporary adjustment for the same, later when the problem started again recurring they have not done anything. The maintenance team just says they are not able to find out the root cause, they are not getting access to other apartments from where they suspect. I also came to know that this apartment already had this issue since long time but I was not informed about it when I was moving in by the guy who had leased me this apartment some Mr Azmi. I have been regularly trying to contact the maintenance team but no response. The supervisor Mr Mukhassir he doesn't bother to answer calls or reply back to message. Have also sent the photos to them showing the condition but they say maintenance team is working.The guy who leased me he sends me every time some new persons number and asks to contact that person. The problem is nobody is doing anything about it. Maintenance team just comes and says oh the problem has increased sir. And they will leave. Now the guy who had leased me i asked him if you cannot repair then provide me another apartment or return back my rent, so he is now threatening me saying don't dare message me I am not the responsible person to look after this etc etc.
Horrible experience with you guys. Have sent several mails also to customer care and the maintenance personnel but no use.
Really pathetic.