MakeMyTrip India — Please escalate urgent

I purchased british airways airlines ticket from mmt. It was from vancouver to delhi on 6 january 2022 which got cancelled due to covid 19 restrictions. I applied for refund in november 2021. Till now i have not received any refund from mmt. I have two other passengers that were booked for same flight. They already received their refund.

Mmt keep telling me refund request hasnt been approved by british airways yet. I called airlines directly and they told me that they have not received any refund request from mmt under my name. According to them, mmt is lying to me about the refund. I really want to escalate this to higher authority. I am a journalist in canada and this is my first time booking with mmt. Its been a very awful experience. I want to file a complaint against mmt for lying to about the refund and poor customer service because its really frustrating at this point.