Most disrespectful and disgusting service ever

I placed a order on the 8th November 2024 by SHEIN, my package was scheduled to be delivered by FedEx Express, I received my first package and there was no problems, my second package was never delivered because it got stopped by some boarding, I’ve been emailing them and all I get as a response is “ our turn around time is 3-5 working days “ but take there own time to response they don’t even apply to their turn around time. I got a email from Ruth Masego Moyo , just send me a email with the amount of tax I need to pay for the package to be delivered and the amount is R3202.88 on the 12th Nov 2024 they send me a email stating that the tax amount is R853.80 they want to scarp up a R2349.08 from where ? I’ve been requesting for this to be escalated but they been ignoring my request! Then Ruth have the audacity to ask me he/she don’t understand why I’m threatening him/she with hello Peter when they trying to assist me. Disgusting this is so unprofessional and no good customer service at all.