UPS Again fails its customers

Not recommending UPS to anyone at all. This is now the second time in less than a month that UPS have gave me terrible service. I received an email from the Brokerage CSD Agent named Nthabiseng Mataung (Z Malekutu is also cc in the mail), Where i must confirm the value of the invoice, which is clearly stated on the invoice. after replying to with the same invoice and asking to confirm if the documentation is correct, I get NO Response. I have also send a few followup emails but still no response. Calling the Brokerage Agent also does not work as the number supp**** does not even ring. When calling UPS customer services, they just but you on hold for 20+ minutes. I payed more for using UPS Express where they are supposed to commit to earlier times, with a money back guaranty...