Cancelled contract still costing me

<p>I cancelled my cellphone contract earlier in December 2016 and was told no further deductions will take place. I was already on a month-to-month contract. Despite this, another debit order deduction was taken from my account on 30 December 2016. I would love to just cancel the debit order from my side but I am sure that Vodacom would just blacklist me. This all seems way out of order.</p> <p> </p> <p>I have the reference number for the cancellation where I was told that no further costs would be incurred. I am now in a different country but cannot get hold of Vodacom on the phone despite holding on numerous calls at further expense to me. The website does not provide an email address to use and their chat function is not currently working.</p> <p> </p> <p>I am not surprised that this has happened but still need this to be sorted out. Can someone from Vodacom please assist.</p>