I use this to pay my bills like electricity, tata sky recharge, my all mobiles including family members, actually they are prepaid so I recharge them through paytm. It is quite useful and it is done within seconds hassle free.
Lately I figured out that shopping from paytm is comes with some bonus as they cashback some money and that thing applied in booking flight tickets as well, sometime that cashback amount almost around 1000. thats why I always use paytm to avail so many services.