Bonitas taking unauthorised amounts from my bank account

In March I added dependents. Because it was after the debit order instructions go to the bank, I received a notice of the amount "outstanding" right after they were officially added. I immediately paid this manually to the account details specified. I also received confirmation that the amount has been received and allocated to the membership. Imagine my surprise when they not only debited the normal and updated amount for April, but decided to help themselves to the already paid March amount as well. This is not a little mistake. We are talking about almost R3000. I then phone to have them correct the matter. All I received was a "sorry, we will refund you in 7 working days". I asked to speak to a senior team member and I was told that they will phone me back - I am STILL waiting on this promised call back. Bonitas, you essentially stole nearly R3000 straight out of my bank *** is food on the table, petrol in the car, and other household necessities that we must now simply do without. I am not accepting your "sorry" and I am not waiting for 7 days to get my money back. Please fix this matter immediately or I will not hesitate to lodge an official complaint with the CMS.