Myntra.com — refund amount not yet received

Address:

Dehradun, Uttarakhand, 248001

I had returned the item on 30-dec-2018. The item was successfully picked up. I also received an email regarding the refund to be initiated. I should have received the refund till 09-jan-2019. But i have still not received the refund yet.
I tried to contact myntra they told me that they have already initiated the refund and it is because of the bank that it has not been resolved. I also tried to contact the bank and they said that if refund have been initiated then it should have been credited to the bank account. I am in midway and i dont understand what to do.