Flipkart — Not Resolved my Refund amount Complaint

Address:

Chempenkottu Padetethil Kuttemperoor Kunnathoor devi temple Mannar kerala -689623

Bought a jeans of price 818 from Flipkart and they send me a wrong product. The delivery person asked me to pay for the product and once I did he said this product is under "open box delivery" under which he will open the package and check whether the product is damaged or not..or whether it is a correct product .it was not so he cancelled the product in front of me and asked for replacement...after that i cancelled the replacement on Flipkart app and asked for refund...but I have not get the refund yet. I contacted Flipkart many times and they said it is seller side and they will resolve it but i t has been nearly more than week I have not received my payment yet.