Noisy Upstairs Neighbours

Greetings and sorry to bother you. I live in a gated society and have been have some issue with the neighbour living upstairs. So they run a small food buainess of supplying tiffin to 5/10 customers. Due to this there has been a lot of noise downstairz in my house as they keep moving cooking equipments daily since the house is small(200 Sq feet). They do not have food Liscense, nor fire liscense for the same. I confronted them that we are facing trouble because of this continous noise day and night but in vain. Instead recently they after telling them that i will complain to police, they bad mouthed us and told us to do whatever we feel like. I had given a written complaint to the society regarding this earlier. And i have give a complaint again on 22 December 2020, telling them about the problem and have even asked them if the society haa granted any written NOC to the upstairs neighbour to run such business, questioning about the safety and the nuisence caused by creating noise day and night. But i havent received any response from the society yet. Recently when i asked about the same, the society is being very biased and tried to provide me letter regarding making thw upstairs neighbour but not clarifying on any of my questions which i had mentioned in my earlier letter. Since the upstair neighbour provides paid tiffin service to the president's family member and the vice president's family, they have been completly baised in this matter. I would like to proceed with further action in this matter and how should i go with it. It would be really helpfull if you would guide me on how to go ahead with this