Reliance or any other isp does not do it on its own. They might have received a complaint from RIAA, MPAA agents saying - so and so ip was downloading so and so file at so and so time. Please warn the user.So, the isp does its job. If this were America, they would have forced the isp to disclose the user behind the ip. Our laws are so weak that MPAA will go crazy collecting a single cent as compensation. Things will change in 10 years time though.