Pathetic Service and No Understanding

I had been retrenched with last day being July 2020 - My 1 month notice was issued on 26th June. My company had a verbal meeting on 29 April to advise that they are contemplating retrenchments (NOTE: This was not a meeting to say that i was retrenched - There are staff that were also in the same meeting that are still in employment). Hollard had used the 29th April as notice date and paid my Edgars account up to that date. There is still an outstanding amount and no one seems to understand the issue here. The account still has an outstanding balance and I constantly email with no response. I am utterly disgusted with the fact that no one can read a simple letter and understand. Please can someone rectify this issue or call me urgently.