DMart — online delivery pending

Address:

Hinjewadi Pune Maharashtra Dmart 411057

Hello,

Place order and confirm by app on 3rd may order no 13623401.
Order delivery date 6th may
No delivery, no response of mail.

Customer care number always busy if we get they cut the phone after hold more then five minutes.

I can't understand once order is confirmed why they not supply the order. We understood that this time they have lot of pressure of work but they should at least confirm over the phone or by sms that when we get our order or not get.
No process of order tracking.

Kindly help support his issue.