The absolute worst
The absolute worst! The customer service is nob-existent. The only way to "contact" is an email address and they just ignore everything. Their delivery drivers blatantly LIE and refuse to deliver. If someone doesn't pay you enough to deliver, don't take the job! But no, they just claim that package was REJECTED(it wasn't) or that my address is a MILITARY address(it isn't), and take the packages "back to the warehouse." No further attempts are made to deliver and packages just disappear after that. LIARS and CHEATS. I actually blocked YANWEN as delivery provider but some sellers ignore that and still use them. Cheap, I guess. Cheap and useless.