Emirates systems not updated. Refusal at airport

I was supposed to fly to Albania from Cape Town. All the regulations state that south africans with a valid USA visa can enter Albania. I got to the airport and couldn't enter. I showed them all the documents that state clearly that we can enter with a valid USA visa . Apparently it is not on the system that with a USA visa we are allowed to enter. My brother having the same documents I have could enter Albania from America. I lost almost R10 000 that Emirates refuse to pay back. Their systems are not updated at the airport. I lost all the accommodation bookings I already made and bus tickets. Emirates' systems are not updated. I'll rethink using the airline ever again