Paytm gained a lot of user base following the unexpected and unprecedented demonetisation move last year. I too started using Paytm actively since then as the cash crunch was making purchases and transactions a pain.
Paytm cleverly changes their user policies from time to time, without prior notice. One day they allow you to transfer money to a persons bank account for free, the next day they charge you a convenience fee for the same action. Most of the time their servers are down while adding money to the wallet.
Paytms customer KYC verification is useless to say the least. I applied for the verification with the promise that I will be given better user experience and advantages over the non verified customers. But to my surprise, the entire move was a sham as after two months Paytm wanted my verification process done all over again.
Their customer service, as already mentioned in most reviews on Mouthshut.com is the worst. First, it is very difficult to get in touch with a customer executive, second, they never bother to reply to your mails. Why mention an email address when nobody even bothers to check it?
Paytm has a lot to learn if it wishes to survive in this market for a longer time. Else, I am sure(and waiting for) a better digital wallet alternative will come up and gobble up Paytm.
I am recommending Paytm here simply because it is the most widely used option in the market today and has the potential to be a market leader.