Amazon India — wrong product picked up,more than a month no refund processed

Address:

301,house Number 40,10th Cross, Iti Layout, 560068

It's been more than a month and still there is no resolution provided for the wrong product picked up and no refund on the same.
No one have the correct ticket number again they are saying i have to wait for 20 to 25 days which is not acceptable.
I had raised te concern on 22nd November.
Please escalate this.