Bad service from old mutual

I opened an investment with oldmutual starting with R500 per month back in 2017. I paid via stop order. In 2019 I went to one of the oldmutual branches to cancel and close it, my funeral cover was also canceled errornously but I jut let it go This year in October I received a notice of debt from my employer saying I owe them R9100 after investigating I discovered that my investment was never closed, I went to the branch on 28 October, completed the for and the consultant sent it to the relevant department I did several follow up I was told there has been an error processing my request for withdrawal but they escalated the matter On Monday 29 November ( exactly a month later) I called to check and I was told the money has been processed I will get it on Wednesday but there is nothing This is a huge inconvenience for me because I have to pay my debt before they deduct it from my monthly salary