Same bad experience here, I order with them the very first time in December 2017 and never received my staff so I started to write to them , also in a bit nasty way, and finally this guy named Matt replied to me, I get my order in October 2019 ( after almost 2 years ! ) and many emails. He convinced me that all the problem were solved so in February 2020 I placed a new order, and guess what ? Its February 2021 and they never even reply to my emails anymore, not even once.
In the meantime I ordered from GC in Spain, excellent service and the shipment arrived here in Singapore within a week. My suggestion ... forget GC USA and support GC in Spain.