Flipkart — Return not getting picked up

It's been a month that I have been talking to Flipkart for the same reason. Everytime I talk to the representative, a return request is placed but the pick up agent never come or any call from him and I keep getting the same text from Flipkart that pick up rejected due to product mismatch. A very unprofessional response from them. This has become a nightmare whereas this should have been such a simple process. I will never use Flipkart moving ahead or recommend to my friends and family. Total waste of money and time as they don't value their customers at all.