Myntra and Ekart Logistics - Didn t get refund

I have ordered Mango Women Black Skinny fit solid formal trousers on **th October, ****. The order has been delivered on **th October,**** ;as the product sized did not fit so I processed a return which was picked up on ** th October,**** after repeated calls to Myntra because of the negligence of the logistics pickup partner. After that I shared my bank details to Myntra for the refund which was never process till today. Every time I call them for the refund they ask me to wait for **-** hours but still there is no refund. I can’t contact them as they have barred the incoming facility and whenever I request a call back they repeat the same thing.
As you can understand I am a student and it’s a hard earned money of my parents so it’s been very difficult for me as I can’t even speak with Myntra customer care and they just keep repeating the same thing to wait for **-** hours.