Fare Components Question
 

I had a return ticket SEA-DXB-JNB-WDH, and got stuck in JNB in mid-April because of the flooding in Dubai.
All sections were business class, with JNB-WDH-JNB on SA (but on the same Emirates ticket).
The inbound flights (SEA-DXB-JNB-WDH) went fine.
On the reurn, I was downgraded on WDH-JNB, and then booked my own flight back to Seattle.
What does Emirates owe me? They are willing to refund the unused ticket portions: JNB-DXB-SEA.
Then there is the downgrade from WDH to JNB (aircraft swap).

Can anybody decipher the codes below, and give me (approximate is fine) refund due?

https://cimg6.ibsrv.net/gimg/www.fly...778bb62e3c.jpg

Are you looking at the straight refund and downgrade compensation or looking for more because of the disruption ?

I filled out the refund form, and they offered ~$900. That seems low.
They say that no downgrade compensation is due because a portion of the ticket has been refunded. Twisted logic.

There must be a way to parse the fare components to see what is due. (?)
I flew:
1. SEA-DXB-JNB-WDH
2. WDH-JNB: downgraded to Economy
3. I did not fly JNB-DXB-SEA

#3 was 2 days after the floods. The JNB-DXB flight was canceled. The inbound had been canceled, too, so no way to get out.
Emirates suggested looking for other flights, and we'd get a refund for that. (ha! - different story)

I flew out on United that same night.