Payout not received

I changed my plan on 1st August 2017 and was supposed to be paid back the balance of my MSA. Time and time again when I followed up; I was told that payment will be done on the 11th December 2017. The story just keeps changing from no payment will be done to payment will be done on the 11th. Fast-forward to 13th December 2017; I am told there is a backlog in payments and I should expect my refund within 3 working days.

In my books; the 11th December 2017 was 2 days ago...3 more days because of a backlog? How is that now my problem? Can my medical aid deductions be done 3 days later also then because I am planning to have a backlog.