LT Online Store — Unprofessional behavior: neither delivered supplies nor refund - 45 days since paying

Address:

Mumbai 400001

I ordered four cartridges with lt online store and made the corresponding payment on june 08, 2020, for inr 5389.06. My order number was "order #[protected]".
The company has not processed my order in the last 45 days and counting. I have tried reaching them in the numbers provided almost every single day since jun 20. They have different numbers, which ring, but never get attended.
I have also written several emails and sought a cancellation & refund. Until today, which is 45 days and counting, they haven't responded. This is an utter non-professional behavior.
I earnestly request that the address my refund request. I have no need for these, as i had to procure it elsewhere due to their unprofessional approach.