Vijay Sales — product not delivered, money not refunded

I have been utterly disappointed by the services of vijay sales.

First off, after making an online payment for my product i received message stating the payment was not processed. Then i got in touch with the call center stating that it has been received and the delivery would be made within 2-3 days and i haven't recieved the product yet, the order was placed on 23-06-20.
I had called the customer care service of vijay sales and was told that someone is going to get in touch with me regarding the delivery of my order that was to take place yesterday but didn't, and i haven't received any response. This kind of service is utterly unacceptable.
No one is paying heed to any calls or emails whatsoever. I need a refund for my order worth rs12, 490