Need to speak with someone about a refund, bought a game twice, requested a refund and came...

I bought the Standard Edition of The Crew 2 for full price (69,99€), 3 days later the game goes on sale so i bought the Deluxe Edition of The Crew 2 (which was discounted at the price of 15,99€), i then requested a refund for the Standard Edition, since
i bought the Deluxe i was expecting to get at least some money back but the request was declined due to "Having played the game, because their terms don't allow refund on used/played products".

I basically paid for the game twice, requested a refund for 1 of them and didn't get single thing back because of it, even though i bought the Deluxe which on it's own nullifies the Standard Edition purchase, i think this seems unfair.

I believe the common knowledge for this is at least refund the money back, since i basically bought the game twice, as it stands 69,99€+15,99€=85,98€ which is 5,98€ more than what the Deluxe Edition of The Crew 2 costs. I'd expect to either those 5,98€ or
the full 69,99€ from the Standard Edition.

I was told to speak with an actual Xbox Support Member to clarify this subject, and not automated systems.

:)