Zomato free delivery offer : 100% off on Zomato
Guys try in zomato, no delivery charge is getting applied, it could be a bug.
Check yours Open Zomato from here
Also combine with available codes for extra 50% discount and paytm upi cashback.
it could also be user specific thing, also when u apply code if it says invalid code(due to issue or bug), close the app and clear cache, open it again after 10-20 sec, now promo will get applied.