Yatra.com - Refund not got processed on cancellation of flight ticket booked by Yatra com

I have booked a flight ticket through Yatra.com on **st Feb **** and as soon the Covid** scenario became deadly and the lockdown started happening across globe, I got my ticket cancelled on **st Mar ****. I got an email from Yatra that my refund will be processed in *-* working days and when it did not got processed till **st Apr ****, I wrote an email to Yatra.com and also spoke to their representative. I was given a written email assurance that my money would be refunded back by **st Apr ****.
Eventually it did not got processed and I did not received my refund. Again on **th Apr ****, Yatra Management told me that it will get refunded in * days and even they provided me a screen shot of some email telling that the refund has been processed in their system. Today I am still waiting and till *nd May ****, still I have not got my refund and everyday Yatra.com is giving me wrong and false assurance of processing my refund.
This has cause mental trauma to me and I am feeling like getting cheated by them. Inspite of so many email and WhatsApp communication where they have promised to get my refund processed, still I am awaiting for the same and every passing day I am feeling mentally harassed by their continuous lies and false promises.