you actually can fix it your self and deduct the cost from your rent before you pay it. or you can refuse to pay rent until it is fixed with in a resonable time frame. my sister is a land lord and said you can do it with no recoil. all you gotta do is write a letter to the owner stating what you want done or will do with pics, and have it notorized, and keep a copy on file. and if that don’t work call a building inspector. the “textured” walls are usually there to cover something up.