Flipkart — Return of my order is getting canceled everytime

I have ordered a product from Flipkart and received different product from the original one then I put it under return. But return of my order is just getting canceled every time.
Once return get cancel I contact customer service and I have to take 2-3 calls every time. It’s been approx month and I have been calling and mentioning same issue every time but issue is not resolved yet. Please help