Need help for applying Paytm EB Promo code

I made purchase on Patym during May which gave me EB promo code of Rs.400 thrice (validity of 3 months). I made 5 such orders which means I had to use 15 promo codes & still have 6 more to use.

But now the terms & conditions has been updated due to which am able to use only 2 in a month.

Can I escalate to Paytm somehow or any resolution for this?

Thanks much in Advance!