PAYTM is a online portal which allows you to make various bill transaction.after using the service for more than 6months I think its one of the best platform to do online transactions and bill payments.initially it has only mobile recharges but later it introduced varioius services also.you can do all your mobile topup and data recharges.the service is very fast as the process will be successful within minutes.
We can also book movie tickets in paytm. Also we can do online purchase through paytm. The important feature is that it gives cashback for doing rechargea. Now they have also introduced electricity payment options also which is help ful for me. Simply paytm is a must have service