House hacking nightmare

[Shane Collins]

I have been renting my duplex for about 6 months to a family 3 kids and mom and dad. 1 of the kids 1 yr old. The kid is a demon. He is literally either screaming or beating on the floor all day every day. Every time he runs I can hear his feet pounding on the tile or hardwood. I have talked to the tenant about noise several times mainly about it after 9pm and nothing has changed. Everything downstairs is hard wood or tile except the bedrooms I can hear every bang noise and every scream. It is driving me insane since I work from home. I am literally going insane. Get this.. I live on the top floor.. other than noise the tenant does laundry every single day, every single freaking day.. we are planning on buying a coin washer for that problem. I need a solution please!! What can I do! I need an inexpensive sound proofing method I don't want to hear her kids anymore.. will carpet help if I put it on my floor or do I need to do something else?