Myntra.com — delayed refund

Second complaint regarding myntra.com
I have returned my order on 27th of november, 2017 and then i have received massage from myntra that "the refund against the return request for"voi jeans men navy blue solid padded jacket"(Return no:[protected] has been successful and it will reflect in your bank account in the next 5 days. Refund reference # 30001073327326166659167 refund amount: rs.2519.49/-".
Then i have received massage from myntra that after 7th, december, 2017 refund will reflect in my bank account but till date i have not received my refund.
I have experience of shopping through many other online shopping sites where i have received refunds with in three to four days of pick ups of products but with myntra this was my first experience of shopping which is worst. Even no customer executive number is there, no mail to support team is excepted by myntra.
I request you to refund my money urgently.