*****ing money from my bank account without

I had a policy with OAKHURST insurance for my vehicle and 30 June I terminated my insurance cover with them because I had sold my car and I informed them that is my portfolio consultant Patience Macklyn yet yesterday 09 July 2015 money was debited from my bank account the amount of R1800 and R110 respective of the fact that I have no vehicle to insure and I informed Oakhurst and they gave me a cancelation later but yet they still debit money from my account to top it FNB bank can reverse the debit order because Oakhurst used pins that even the bank cannot go through now FNB is sending me back to the same Oakhurst. All I want is for Oakhurst insurance to refund me my money as I informed them in time and told them that I sold my vehicle so I cannot continue my policy with them.