Unfortunately, the TAs are saying they either won't or can't give me the full fare construction. I haven't asked for Fare Rules as the TAs have given me their own change/cancellation charges, which aren't the same as any on EK's website so I can't narrow it down through that.

ITA matrix isn't helping too much as the TA mark up means I can't cross reference to an ITA price with a 100% guarantee I'm right.

There are some patterns to their pricing which help, but I'm looking for more certainty.

They won't entertain me giving them the fare basis to replicate.