Myntra.com — refund issue for 3 products

Refund not yest processed for 3 products no actions are being taken .. making me call every day and even then they don’t care it seems. I have checked with the bank and I have checked the my statement no money has been credited and they have send me a reference number as well but the bank denies the same . And when I call myntra they make me drop the call by saying they will call me back in 24 hours 15 mins etc and but no calls have been done by them . What to do help me please