Incorrect Debit order amount

After I changed some details on my schedule last month and Alexander Forbes agreed to reduce the annual increase amount. I was emailed a new schedule on the 16 March, which I accepted and agreed upon. <br> <br> When the payment run went off the on the 3 April, it was the original high premium (Difference of R600 odd)and not reflecting the new agreed amount. I contacted the admin department and they agree they made a mistake and would refund the amount. It has now been 2 weeks and still they say they are working on it. <br> <br> My online profile still has the incorrect schedule amount.