Question-: Is maintenance by the landlord recorded in your lease??

If so, issue formal letters of request for maintenance jobs...build up some documentation, then visit the lease registration dept of the Municipality and submit a complaint...

They will contact the landlord to instruct him to adhere to the maintenance clause. Failure to do so, and a repeat visit by you, will result in you being formally advised to execute the works and the monies will be taken from the landlord with you being reimbursed. (keep reciepts)... Well, this is a rough idea of the course of action, but they will act, if you have a maintenance clause.