Flights to Ciudad Del Este, Ciudad Del Este $100

I tried to cancel same flight booked in my name on 28 Nov, but "Cancel" kept opening a "Booking" page. I cancelled 3 other flights at about the same time (18 - 20 Nov) with full refund, but this one refused to cancel - fault in Expedia system). I continued to try to cancel the flight on Expedia platform virtually every day to 26 Nov. In the end, on 26 Nov, I located Paranair email address and sent them an email requesting a cancellation. I did not receive any response from them. I do expect a full refund. Thank you for this opportunity. All other services were fine. Fergus Keane