Welding shop in residential area

I am the resident of B-Block, Avantika, Rohini, Sector – one, Delhi – 110085. Six month ago a shop of commercial work of welding, sheet cutting, making house windows and shutters of steel material and grinding in our residential area has opened in DDA Market, near Hotlip Ice cream Factory. The creates very loud noise of grinding, polishing and cutting which's the major cause of diseases like headache, sleep disturbance, hearing impairment, hypertension and most importantly students are not able to concentrate on their studies. The fumes of welding and grinding is making breathing uneasy in the area. I had complaint about the issue to various authorities such as CPCB, DPCC, Delhi Police, NGT etc. But no action is taken yet by any authority even after their assurance. However I got some reply from NGT. The have taken my complaint and present that complaint BEFORE THE NATIONAL GREEN TRIBUNAL PRINCIPAL BENCH, NEW DELHI dated 01st November 2019 and order passed by their bench. "Let the Deputy Commissioner, North and the Delhi Pollution Control Committee (DPCC) look into the matter and take appropriate action in accordance with law within one month. The DPCC will be nodal agency for coordination and compliance. A copy of this order, alongwith complaint, be sent to the Deputy Commissioner, North and the DPCC by e-mail for compliance." But matter is still not resolved and they are still operating in open with obnoxious noise of machines and tools along with creating air pollution in the surroundings by welding and grinding which i feel is a violation of law in the residential area. Can you guide me what can i do next for the peaceful and healthy surroundings.