Not sure about how it is, but 6 months back, I tried getting bridge mode activated on airtel via service guys and customer care on our office connection, and both of them did not even know what it was, though I certainly didnt email, I'll try this out.Unless something has changed recently, it used to be pretty straighforward on airtel
I had to log a request to map port 4 to bridged mode and it was done by the end of day. This was a couple of years ago
Do you have any idea about Jio? My folks are pretty used to JioTv and its OTT add-ons, so we are stuck with Jio at our home for the forseeable future