Paytm is most valuble wallet serice on India.
I always used paytm and make payment on my Vodafone numbers, Videocan d2h and mores.
And we like paytm because there are more promocode are available this is most likly things add in paytm pay service.
But CESC Kolkata Electric payment service are not available on your site.
We Hope paytm add this CESC payment service very soon.
Other wise no problem we face in PAYTM.
Thank You.