If you're experiencing persistent noise disturbances from an upstairs neighbour, several legal avenues can be explored. It's advisable to first attempt amicable solutions, such as speaking with the neighbour or involving society management. If these fail, gathering evidence like sound recordings and video, and securing witness testimonies from other residents is crucial. You can then consider serving a legal notice or filing a complaint under Section 133 of the Criminal Procedure Code (CrPC) with the SDM court, which is often a faster remedy. Alternatively, a civil suit can be filed for an injunction, with interim relief potentially granted quickly. The police and local municipal corporation may also play a role, though their effectiveness can vary. Legal recourse can take several months for a final outcome, but interim measures can be sought sooner.