If you want to use paytm for mobile recharge ang bill payments, we can use it without hesitation
but if you want to use for the business purpose its not good because they take 2% fees on every transaction you send to a bank account,
if you a card swiper there is less fees then paytm service.
and there are many reviews said that some deposite are not credited and they are saying we didnt receive your payment from your side, but the money has been be debited.
this has happen to when I deposited 700 rs and they said the same thing. if anyone want prove I will mail you.
conclusion:-
use paytm for recharge and bill payments but not for bussiness.
this is opinion, take saggeston sfrom other people and decide your self.