DEBITING MY ACCOUNT WHEN ITS CLOSED

Oct 2014 I cancelled with Chubb ( home & office), They assured me the account was closed and no further debit orders would come off, however, from last year until now ( 17 July 2015), they still debit my account each month, and I email and call several times and argue and I all I get is that they cant understand why this is happening. I then have to pay my bank R 200-00 each time to reverse the debit order so I am loosing alot of money which I cannot afford. I have dealt with Kate Graybrowne, Nomusa Ntuli, Adrienne King, Murray Barnes, Anne Lowlings, Arnold Ramouthar, and Anneline Govender and still nobody can stop this from happening. In my opinion they do this to alot of clients and is ***** and theft. They also say they never receive email complaints ( which is convenient for them) I strongly believe they know exactly what is going on but hope that clients dont pick up the amounts being debited and will continue doing this until they are stopped. I would like full refunds for the past months including interest and all the amounts I have paid to the bank to be refunded to me asap to avoid any further unpleasantness. Anneline said she would call me early this morning, no calls yet