How effective are noise complaints in Japan? /What to do if the noise level doesn’t change?

My next door neighbor uses a device that sends low frequency vibrations towards my apartment. He uses the device in the living room but I can hear/feel the vibrations from my bedroom too.

I told management about this problem and they said they would call the neighbor but I heard him use the device twice. I've also knocked on their wall before when they use the device. Sometimes they move the device to the shower room (which is fine because I can close the shower room sliding door and not hear anything) but other times, he'll keep using the device for a longer time.

I don't know what the device is but I always know when he starts using it and what setting he is on….I'm assuming the device goes on the floor and because the device is touching the floor, I get the low vibration beats sent my way.

I don't know what to do and this is my first time posting on reddit.

I feel like I'm going crazy because the vibration is hella loud. My next step is to call management again and ask them if they've already called the neighbor but….if I keep hearing/feeling the vibration, I think I will go crazy.

I also don't know what the device could be. If any of you have advise or experience with this, please let me know. Thanks!

by Jo_Skellington