Zomato — account blocked after argument over a fake promotion

I placed a order worth ₹138.90 with restaurant billion spice bakery who were running a offer of buy 1 get 1 free on entire menu. But on delivery i noticed i received no free items so i complained about the same and i was told the offer would be provided only if i mentioned it in order description to provide it else they won't provide it. There was no mention of such terms and conditions. Neither i was provided with this information prior to my order so i complained about this and without asking me zomato chat resprentative issued 69₹ credits to my account while i asked for refund further they blocked my account on argument stating violation of policy by me.

Order id [protected]
Email - [protected]@gmail.com