Zomato — order didn't get delivered after confirmation

Address:

New Delhi, Delhi

I placed order through zomato i got confirmation of the order.
Restaurant ‘moti mahal’ called me that it’s been 30 mins your food is ready but zomato delivery guy didn’t come.
And nobody is responding to them.

So i called on zomato helpline number some guy picked he told me to hold and wait.
I called them again they put me on hold and didn’t pick my calls.
Zomato is such a big organisation and why did they send me confirmation if they didn’t have delivery guys and customer care was so not helpful.
They put me on hold for 15 mins and never responded back.