No response and no back payment

On the 20th of November 2015 I cancelled my insurance with Santam. On the 1st of December the full amount was still deducted from my account. I called my broker at Wenru Brokers on the 2nd of December and did an enquiry and was told that the cancellation was done after the 20th of the month and therefor the money was deduced, but a back payment would follow. I enquired when the payment would be done and the lady notified me that Santam could only tell her on the 4th of December. On Monday 7 December I made yet another enquiry about it and the lady at Wenru told me Santam did notify her when the payment would be done, I asked the head offices number and told her I'm going to Hellopeter.com. I phoned head office at 12h38 and spoke to Grimmer and he transferred me to the financial department where later a lady named Sonja answered and told me the department would be available after 14h00. I asked her to tell them to contact me back when they are available. I gave her the contact details and the reason for my request. Up to date no one phoned me back and I still don't know when I will get my R1 321.41 back and my other debit orders be payed. What else must I do to solve the problem?