Device Unlock taking forever

Hi,

I am not sure if it's a sort of black hole where all the request go but I am surprised the way things happened. I have to go out of country in some time and there I have to use a different sim. I luckily start requesting for the phone unlock and till date I have contacted the service team thrice and each time they update me in 48 hours I will receive a mail with the unlock details. But still after 9 days of waiting and trying no update on the same.

Not sure what to do or whom to complain, but it's definitely make me disappointed