Debit Order procesed after cancellation of contrac

Hi<br> <br> On January 28 I sent an email stating the following \This email serves as written notice and commitment that my contract will be terminated by Vodacom in the period January 2016 and no further billing or debit orders will be deducted from my account.\"<br> <br> Please explain why you have debited my bank account for R 540.23 if I am no longer a Vodacom client?<br> <br> I received the following SMS today \"Nedbank: Debit order of R 540.23 processed on acc no **8606 Ref: VODACOM *** I***\"<br> <br> I expect clarification and resolution to the following 3 points:<br> <br> 1) Explain why you debited me for R 540.23 if I am not your client<br> 2) You are to refund me for the R 540.23 with immediate effect and send me proof of payment<br> 3) You are too cancel any present and future debit orders with Vodacom with immediate effect and send me proof of cancellation<br> <br> I expect a response A.S.A.P before I request the the above on social media!<br> <br> I would have communicated this telephonically but your service is shocking ( 20 minutes on the phone with no answer)"