I am been using this service from past many years.It is really helpful if u want urgent recharge in your mobile. They have really fast and reliable service.Not only that they even preserve your past recharge bills in case u need them later.Not only that Paytm is the nice shopping website. we do mobile recharge on this then travels, Hotel booking all those facility they given to us.It is most useful app for me or other people because it has all in one function I can buy and sell product we can do recharge pay electric bill, transfer money from on bank to another pay water bill.All my transactions via paytm app/site are hassle free and secure. I dindnt face a trouble even a single time. Transactions have got cancelled and unseccessfull but I got my mobey back within no time as they promised. Even their app’s GUI is nice and smooth.