Calm down and try all possible solutions.
1) Contact carrier and see possibility of changing without Bitmain (unlikely).
Some carriers will attempt delivery several times, and then hold for pick-up at their office before returning package.
2) Contact Bitmain agents.
They have address change instructions in 2016 for China:
https://bitmain.kf5.com/hc/kb/article/162423/They also have Wechat chat representatives. Not sure if open to international clients.
Good luck.
Thanks for your advice, i have emailed them too while referring my emails sent to bitmain support etc.
The phone number listed in google does not work.