If you're in the US I think your turn around may be faster - I had to ship mine from Australia to Hong Kong, NA customers only have to ship to an office in the US as far as I know:
Please print your online email receipt, note you need a refund, and ship your item with accessories / box, printed email and a note to the following address:
If you reside in North America or South America, please ship the item to our USA address:
2032 S. Orchard St. Apt. B
Urbana, IL 61801
If you do not reside in North America or South America, please ship your item to our Hong Kong address:
HIFIMAN Customer Service
Rm326, Hor Ping Hse, Long Ping Est, Yuen Long, N.T.
Tel: 0085224456310/ 97338010
After sending your package back, please send the tracking number to me. Thank you.