Travolook — Fraud/Cheating in the name of cheap flight ticket

I booked s ticket which costed me 3200 from Del-Mum. Later had to cancel coz i couldnt travel as i had isolate myself following my colleague tested +ve for Covid 19. I cancellee the ticket and was waiting for refund of aprox 699 as per the T&C. However travolook said that they had given me a discount and the actual fare was 3700 amd the refund will be adjusted since i was given discount and that they wont refund me the amount. At the time of.booking there was no where mwntioned about this, this is cheating