Sep 29,2019: I paid for my order
Sep 30,2019: Got cancellation email due to "Declined. Shipping Address Verification Failed", saying refund may take 10-30 days
Nov 4,2019: I emailed them for refund follow up (over 30 days already)
Nov 4,2019: They replied repeating that refund may take 10-30 days, plus it may take 30 days to appear on my credit card statement
Nov 22,2019: I emailed again (54 days!)
Dec 6,2019: Still no reply. I emailed again. (68 days!)
Jan 28,2020: They finally replied that "Your refund had been submitted." (121 days!)
Eventually, my refund was received somewhere between Jan 29 and Feb 12.