Flipkart — My order is missing and I am blocked by Flipkart

I placed my grocery order to flipkart. Some part of order was not delivered by seller and it was acknowledged by seller's delivery person and he said we will refund for missing items. Later when i checked with Flipkart customer care, their executive created return request for missing items from backend. I never received my refund and Flipart blocked me for return request which i didn't do but rather their executive from backend. Now neither I am able to login nor flipkart customer care people able to help me with orders. I am stuck.