Brokerage woes and a useless call centre!

I have a parcel that was shipped from the UK. The supplier shipped with the wrong invoice and corrected it, but after 10 days I still don't have a customs clearance invoice from the brokerage team. Issues to date:

1. Brokerage Team contacts me (kmalefura), I send her an e-mail and she transpose the e-mail address incorrectly into the system (delay 6 days) 2. Brokerage Team contacts me (Nicho Mamogale) and I give him the email address again. He sends me the customs inv and I advise it is based on the incorrect supplier invoice and send him the correct invoice 3. Call the call centre two days in a row for 45 min at a time without answer; in desperation try the switchboard who puts me through to Phephisile Makhanye who advises that the broker agent says the invoice supp**** is in Euro and not British Pounds. I send an e-mail back showing the broker agent doesn't know the difference between a £ symbol and a € symbol! (delay 3 days) 4. Call again today to find out where my invoice is...spend 45 minutes on the line and run out of airtime...

I can't do this anymore...is there SOMEONE in UPS that can get my invoice to me, so I can pay it, get my goods, and NEVER use UPS again???