Trying to track an invalid debit order

Nedbank Debit Order Enquiry, <br> Reference Numbers: F***2 and ***4, <br> <br> On 31 March 2016 I completed an online enquiry to try and track a debit order which I am not fami**** with, <br> Reference number received was F***2, <br> On 11 April 2016 I received an email from Orlincia Naidoo stating that their attempt to contact me was unsuccessful and that I need to contact them if I need any more assistance.<br> <br> I contacted them on ***, spoke to somebody who left a message for Orlincia to contact me back, still waiting.<br> <br> All I want is to track and stop that debit order, who can assist me with this?<br> Yes I was contacted by Nedbank from a 031 number numerous times but every time I picked up the phone they hanged up?<br>