Apurv,
You may need to look for
telecom service companies or more specifically IPTV billing service providers to find potential clients. There are a lot of companies providing services to telecom companies who will help you get leads by partnering with them.
I have provided a couple of links below for a company based out of Hyderabad/India and having telco/IPTV clients across the globe. You can get in touch with them and request to be a partner and get listed on their websites:
http://www.experiencesure.com/solutions/media-entertainment/ott-iptvhttp://magnaquest.com/products/sureIf you can do a bit of research, there are a lot of telco service companies in bangalore too. Hope this helps.