Paytm Mobile Solutions — cashback voucher

Address: B-121, Sector 5, Noida – 201 301, Uttar Pradesh, India, Gautam Buddh Nagar, Uttar Pradesh, 360005

I buy samsung tablet and paid amount through paytm. They give me four zomato coupon worth rs.250 cashback. I already used three but cann't use last one. When i used last coupon, the coupon tell me that you can use only two coupon per user per month. But actually they don't specify it in terms and conditions. This is last month for coupon for redemtion and i cannot used it in future. This is false term and conditions. I need my cashback and compensation for waste my time. There is no online plateform to solve my problem in the paytm.
31st october is last date to expired this coupon code.