I just taking about Paytm.
Its not a website as well as it carries all things like as any recharge, any booking, pay any lone, buy or sell a product and anything what u wants.
I do any mobile recharge prepaid or postpaid, pay electricity bill, pay loan, booking a movie etc etc.
It is most trustable website or app for your money.
No any payment stop or failure.
For any buy a product it has no option for cash on delivery.
Its also have paytm bank.
I love this app for easy payment anythings.