Buffalo Express is the worst courier that I have dealt with

I have had the worst experience with Buffalo express from the very beginning. Firstly, they need to improve their automated communication system. It is very slow at picking up payments etc. and even when payment is done I keep getting automated messages saying I need to pay. I had to pay the VAT/import fees twice as the system did not pick up the 1st payment. When I sent proof of that payment, their system did not accept it so I paid for the 2nd time which they picked up. I am now out of pocket. My parcel was then mis-routed. I phoned to check up and they said it had been handed to ITT for delivery. I am VERY reluctant to order from Shein again if I have to deal with Buffalo Express!