Rude and bad internal customer service and unprofessional drivers

FedEx has very rude customer service that does not do their job and Driver that do not respect customers. A shipment was sent to me from China, and after waiting for the shipment for a long time I contacted FedEx to ask why the shipment is taking long. They said I haven't paid the tax invoice. I told them I have not received the invoice. I send them an email three times to get the invoice, but they have not rep**** and sent back my parcel to China without advising me. they don't read their emails, even after sending several to ask where is the parcel, and where is the invoice. They never rep**** and sent the parcel back to China. The new driver in my area is not professional and apparently was not trained. He will call you and come to deliver a parcel even after you have advised him that you are not available.