Jiomart — I'm complaining about inconvenience about online shopping

I had ordered many grocery items a week before, firstly the delivery date was shifted and posted everyday.. .after a week on 13 June it got cancelled without notifying... It has been repeating frequently Which is really a lousy service, being regular customer this inconvenience and such a business is unacceptable, the immediate action to be done and I want my order to be delivered by tomorrow itself. I have come up with this problem hoping you would look into this matter and make sure is not repeated and such event will tarnish company's name, so please address this issue.