Mytrip.com complaint: No refund of my plane ticket though Air France ed they refunded them.

I have bought a plane ticket to France end of March 2021 :
booking KZQKHS
Order: L1iL1N
It was a return flight London-Paris.

Due to Covid restriction Air France cancelled the flight.

I was told by Mytrip.com that I could only get a refund when Air France refunded them.

We are now beginning of August 2021 and Mytrip.com had still not refunded me claiming that Air France have not refunded them yet.

I contacted Air France and this is what they answered to me :

“ We have looked into your ticket and in our system shows already as refunded.
Please get back to your travel agency for any further clarification. If they need any information about this matter, they can contact Air France via the trade support department.
Thank you.”

I am tired of calling them and waiting hours before anyone even answer the phone just to tell me that they will “ escalate it to their support team which will get back to me”.

They never do get back to me.