Processing debit order without authorisation

On Monday 2 November 2015 a debit order for R454.73 was processed to my bank account without my authorisation. I have written too LPA previously and asked them to cancel ALL debit orders that may exist on this account as I will decide how I will pay the Association Fees when it is due in July 2016. <br> <br> On 3 November I left a message on LPA's web site asking them to get their accounts department to contact me - so far no response. <br> <br> I also sent an email to their customer service department on 3 November 2015 requesting proof of my authorisation of the transaction. I got a response that the matter was referred to the relevant department and nothing else.<br> <br> I am not happy with the poor service I have received from LPA