WORST SERVICE

I sent a parcel for the Postnet to Postnet courier, from Sandton to Khathu, I had to keep following up calling the Postnet head office and they kept making empty promises about the parcel reaching its final destination, after lots of phone calls they eventually told me my parcel was lost , I need to send invoices so they can claim with their insurance,its been almost a month and i have not heard anything from their so called insurance company , i was sending stock to my clients and have lost lots and lots of money as a result of their incompetence , up to now no one has the decency to update me , all i sent was invoices no other details was requested, Im very disguisted and have even changed courier companies because Postnet has no idea of what customer service is all about , they dont care about the inconveniences they caused me due to their dishonest drivers who ***** peoples parcels