As a comparison - I just called the Etihad call centre (though it is 11:30 pm here in Dubai so I guess not a very busy time). After selecting Arabic/ English, you can enter your FF number, which I imagine gives them all the details (the Guest centre was closed, so didn't get to verify this). The good thing though was the call was answered in 1 ring, unlike EK on which it seems like everyone has had to wait for a very long time. I always have this problem with EK in Singapore too, where I invariably need to call 3-4 times to actually be able to get through to someone. The US call centre is pretty good though.