Paytm Mobile Solutions — Paytm promises a cashback but you do not get the amount -a fraudulent method to lure cusyoners to go for the bill payments

Recently i made a credit card bill payment through paytm and the offer stated that if the credit card transaction would be for more than rs.5000 we would get rs.100 cashback for the first ever credit card bill payment. I made a payment of more than rs.5000 and was issued a scratch card which offered upto rs.100 cashback on dth recharge. When i went to recharge dth and applied the voucher code i found only 5% was allowed as cashback on dth recharge. Where is the rs.100 cashback promised? If i recharge for rs.100 i get a cashback of only rs.5. Whete is the rs.100 cashback promised? Is it not a cheating policy by the company to find out the card details and not giving the benefits provided? Id they promise rs.100 cashback they should allow in full not only 5% of the recharge amount.
Today the offer has been lowered for payments over rs.2500 but that time it was rs.5000 minimum payment.
Paytm is misguide good customers by putting limit on cashbacks after the transactions are done. Nobody needs a meagre 5% of successive transaction as cashback. The main offer should specify the details in the very beginning.