Myntra.com — didn't receive shipped item

The item which myntra has sent to me hasn't arrived yet. And it has been more than 3 weeks. I can't track the item and the customer care services also not available to talk. This is very bad. The item in the first place didn't come in a good condition and yet I returned it due to size issue. Now myntra is saying it didn't meet the quality as it might has been reused .. Still I agree to take it and so they reshipped it. Till Now it didn't come and It is very disappointed for myntra such a big company... Doing like this