Lack of communication!

I’ve been working with multiple international courier companies but I just always find fedex to give me so many issues. Firstly they almost never first reach out to me when parcel is in SA, I always need to request duties and documentation myself. Then secondly I am now finding myself with an issue no one seems to help me with. Total value of goods on their side is wrong, I have provided the correct invoice from supplier and my proof of payment and still have been waiting 8 days for any VOC or update on What’s happening. I’m not paying double the duties I should pay.

Really disappointed with the lack of communication of their customer service.