Flipkart — Havells Hair Dryer, not picking up the return product

So i ordered havells hair dryer few days back. I recieved product of different company. I applied for return of the product. 2 days later the pickup guy came and said we will not be able to pickup your order as our office has denied it. And then after few hours a got a message that my pickup is being cancelled. The next day i again applied for the return. My return got approved today. But again the pickup guy on call said that the pickup cannot be done as our office has denied it. Can i get to know whats wrong with my pickup??
Tried contacting flipkart customer care but they keep on saying have patience. But there is no scope of patience left in me rn.
My refund of 920 is being pending from last one week.
I need the refund as soon as possible
This is so much frustrating.
Order id :od[protected]