Reliance Mart — Product not delivered

I've paid for a cooler from reliance smart store in baramati. I was told it will be delivered very next day to my doorstep which is just 10 min away from store and apparently they give it to me right away so I've no option but wait.
My complaint is waiting is all I did, day after day I visit their store and they keep saying it will be delivered today, it is out for delivery just for you.
All Lies!!
If they can't deliver just let the customer know and refund the money so one can buy it from somewhere else, why are stalling the customer!?