Same shit is happening with MTNL. But I blocked the offending IP at my router level and the popups stopped. But......
Once I crossed my FUP, MTNL started pushing different kinds of ads about buying their data top-up. That time the ads are pushed from another server. Even if I block that server in my router, it will not load the page if the ad is to be shown. I have to refresh the page. The frequency of that "You have crossed FUP" ad is so high that I have to refresh a page twice after every 10-15 pages. All blank page loads are attempts to show me that FUP message.
User experience goes to dogs.
Once I crossed my FUP, MTNL started pushing different kinds of ads about buying their data top-up. That time the ads are pushed from another server. Even if I block that server in my router, it will not load the page if the ad is to be shown. I have to refresh the page. The frequency of that "You have crossed FUP" ad is so high that I have to refresh a page twice after every 10-15 pages. All blank page loads are attempts to show me that FUP message.
User experience goes to dogs.