How Do I Deal With My Neighbour’s Disturbing Noisy S'ex?

I am a single mum of two who just moved into a one bed apartment after months of searching for affordable apartment in South C. The first night we moved there, I was so tired, I slept like a baby. The next morning my six year old daughter told me she heard someone crying from the next flat during the night, I didn’t pay much attention to her. Follow Us The next evening, I was in the sitting room trying to unpack, and my two daughters where playing in the room, then they ran to the me and said the person is crying again, I went to the room and what I heard was shocking. It was my Neighbour having s'ex with a woman and they were both making loud noises and uttering unprintable things to each other. Their window was opened and their light was on too. I rushed my daughters out of the room. For one week after I didn’t hear anything again, until it started again. Morning, afternoon, night, midnight, this man brings girls home to have s'ex anytime of the day! He is a man in his fifties but doesn’t live with his wife or children. My room’s window and his room’s window are facing each other because the compound is very tight. I talked to the two other occupants, who also hear the noise although not as much as I do, because their apartments are not so close to the Neighbour’s. They said it is common knowledge in the area and they have stopped talking to him about it and were just waiting for their rent to expire so they can move out. I summoned courage and still went on to talk to him about it; one of the other occupants followed me. To my shock, he said if I can’t deal with it I should move out . I just moved in and paid for two years! The other occupants told me that the people living in my apartment before I came in, moved out because of his s'exual noises before their rent expired! Right now, I am sleeping in the sitting room with my daughters to keep them away from the noises, even during the day; I don’t allow them play by themselves alone in the room because my Neighbour can start his thing anytime. I am so angry but helpless, how do someone handle this kind of thing?