The exact same thing happened to me. About half a year passed, countless emails, messages, and support tickets. I sent photos of the purchase, and nothing happened. It feels like a bunch of complete amateurs sitting there who neither understand nor care about the players' problems.
I've already moved past it, they ripped me off for about 20 euros. But it seems they aren't even capable of finding a solution to this issue. So many people go through this and nothing ever happens. Honestly, this feels like outright fraud and embezzlement.
Anyway, in my opinion, they lost way more in the long run because I used to buy tons of skins and every single season pass. Altogether, they lost triple that amount because of this attitude. Since then, I completely avoid the game, I don't even launch it, I uninstalled it. They can be happy with my 20 euros. If this is worth it to them, so be it...