Yeah, one thing about GearBest - they screw you completely by being dishonest with the shipping labels and customs invoice. Mine (from GearBest) also took an extra 2 weeks to get through customs just because they put a fake shipping invoice in the package and the Austrian customs didn't like that one bit - they held it until I (or GearBest) provided real details about the package. I had to send them the Payment receipt, a copy of the original web order (lucky I kept it) or else they'd just deny the package and send it back. I even had to pay customs duties on the "free case and USB hub" that GearBest included, simply because GB had stated these items cost eu0- .. when I called customs, they even looked it up on GearBests' website, saw the normal prices for the case and hub and decided to levy tax on it - all because GearBest had stated the value of the GPD Pocket was eu100,- ..
So if its not there yet and you suspect it, call your customs officials and explain it to them - possibly they're holding it because of GearBests' dishonesty.. which they (GB) will explain to you as them doing you a favour so you don't have to pay customs duties, but it backfires. GearBest have a *bad* reputation with customs officials, at least in Austria, and they *always* get flagged for dual inspection..