Disappointing turnaround times

For my previous import item (***), Fedex had charged the incorrect duties. I sent them the invoice with the EUR stamp on 25 Feb 2021. I sent daily emails requesting for this to be corrected. Only on 3 March did Sophie Nkhabelane read the email and request someone else to correct the duties. Within 5 minutes it was corrected.

I am now having to go through the same experience again (***). Duties were charged again and again I sent the invoice with the EUR stamp on it on 16 March 2021. I have sent emails pretty much everyday and I am still waiting for someone to give the go ahead to correct the invoice.

Based on previous experience this correction take 5 minutes to sort out however there seems to be a need for a senior person to take the time to look at the issue and give the go ahead to correct which takes about a week. Surely a company as large as FedEx can figure out a timeous solution to this problem.