UPS poor service and ****mers

This company is full of ****. The used wrong HS number to invoice and when I request the to correct the invoice so that I can pay correct amount they send me from pillar to post and they say they will send the package to state storing with a penalty of R5000 after 14 days. They phones are not reachable and they don't respond to emails. I am still waiting and it's over 4 days