I use paytm codes for offers and it really works I saved about thousand rupees from paytm recharge. There are many website who provides reedeem code I choose grabon.in to find codes. There is other option of transfer money from wallet but it charges about 4?.
Friends I am using paytm since two years and recharge from paytm about 100 times or more. It is most trusted website of recharge.
I recommed you to use this website to recharge bcos it gives you full satisfaction. I also do recharge from freecharge but there codes are fakes.