Legalwise dispute

So a few weeks ago I recieved a sms from my bank that my balance is -R2000, although I do not have an overdraft facility with them. The arrears are due to a wrongfull legalwise debit that has been going off from my account since October 2017. After phoning legalwise I was informed that the policy holder is a Mr Masego, whom I do not know. I have repeatedly sent e-mails requesting them to reverse all the payments into my account but to no effect, not even a phonecall! Thus I have avoided making deposits into that account, due to the arrears, only to get a notification this morning that my bank account has been closed due to this situation! I am livid