UPS Triple charged, offered refund which was not provided, then turned over to collections Atlanta Georgia

Several months ago, UPS triple charged my company for international shipment - with only one of the three successfully delivered. Initially contacted UPS customer service - promised that both unfulfilled / wrongful charges (~$114.54 x 2) would be removed.  Today, received collection notice (attached) from UPS. When I contacted UPS by phone, after being redirected to literally six different areas I was informed that the account had been forwarded to third party collections.  Based on readily available data online e.g. ripoffreport.com etc., UPS engages in this sort of cruel and wrongful conduct on a remarkably regular basis. Accordingly, and thru no fault of their own, businesses and consumers are either paying bills they don't legitimately owe, and / or having their credit damaged by UPS. It is sincerely hoped that your powerful entity may prove instrumental in making UPS cease and desist from such wrongful misdeeds.