I purchased a "Book and upgrade with Avios" ticket for 2 adults on Feb 7 from ZRH to SFO, from premium economy to business class traveling on May 20 for total of $3419.22. When I checked the fare conditions, it said the avios was refundable and the base fare was also refundable upto 24 hrs before the first flight. Our travel plans changed, so I canceled the reservation online through the BA app on February 9 (less than 48 hrs later). I double checked the fare conditions and it still showed refundable for the cash portion of the fare. The app did not tell me how much money I would get back, just said that the cancellation would be processed, I got an email saying the same thing, without any details. Now. BA is telling me that we will get $41 back per ticket, since the cash portion is not refundable.
I cannot find the fare rules anywhere in the eticket. Is there any other place to look this up? The booking is gone from Manage My Booking, since it was canceled. Unfortunately, I did not take any screenshots of what I saw before I canceled the ticket.

Appreciate any help.