Reliance Digital — Not returning and no refund

I have ordered a Samsung galaxy m21 blue phone order id RDF04785791 on 7th August MODE OF PAYMENT:credit card, but i have entered the wrong pincode. On 14th August i contacted the delivery partner ECOM, they asked to contact reliance digital customer care.
I have called to customer care, one of the representatives told me that pincode can't be changed now as it is in delivery, and said he had initiated the cancellation process and said that my money will be refunded in 2 days to the source of payment.
He also said that we have to order the same product again. So I have ordered the same phone order id: RDF05259019 but this time black color and mode of payment as a debit card. I have received both products and the money is also not refunded to me for the 1st product.
I want to return the first product (blue one).
This is the message I sent to the customer care head, there is no response.
Even the customer care representatives are not responding, I am frustrated by this. I really want to return the product.
I would not order the product 2nd time, if he had not told me to order again.
If they don't want to take back the product, then why did they told me to order again.
I even have call recordings, It is more than 45 days I am trying to return the product.
I am calling them for every 3-4 days, but no response, even their customer care head is not responding.

registered mobile number is [protected]
order id of the product to be returned and money to be refunded is RDF04785791
associated email id:[protected]@gmail.com