Cancelled Debit Order still Processed

I requested that Santam cancel my policy on 23 February 2015. Despite this they still deducted the insurance amount from my bank account on 3 March. They notified me that they will only refund it to me in 30 DAYS. I cannot understand how they can hold my money for 30 days, surely the refund can be processed in a day.<br> Now I still have to pay for my new insurance and survive the rest of the month on the little money I have left in my account. <br> Please can Santam make a plan here!