Sab has no mercy and is robbing people of what is theirs

Hi I'm writing on behalf of my dad Richard Nkosi owner of Farasi Tarven. Sab has been his supplier for years now but last year June they didn't delivery and my dad called to find out and he was told that he has a debt of R86 000 of wich he didn't know about. He then spoke to Lebo who was his representative then said she was also confused of what was happening because she and my dad re checked the invoices. My dad then went straight to the branch and asked to speak to the manager Frans Moalafi but he wasn't assisted. Several times he went there and he was always told Frans is busy. Sab has been sending sheriffs in my parents home threatening my dad of someone he doesn't know and of wich has been affecting him resulting in him being in and out of hospital because his tarven has been struggling. What made me suspicious is that Sab has been changing the debt from R860000 to R32000. The other day they called my dad saying thanks for the payment of wich he didn't make.