Unathorised debit Order

On the 01/02/2016n an unauthorised debit order of R156 went through on my account for \NRB accting subscription fee\", I called Nedbank call centre and they said they are aware of the this and they are investigating. called again on Thursday to see if the matter is resolved, it had not still they promised to come back with a feedback for me on Friday which they never did.<br> <br> Its a Monday again, still the matter is not resolved."