Charging for cancelled services

<p>I agreed to a data upgrade package by a Vodacom tele-salesman in March 2016 being under the impression that I was agreeing to additional data for my phone. I however immediately cancelled this subscription when I received an external modem and sim card as I was not interrested in this product. Vodacom sent a courier to collect the modem and sim card but I have now realsied that they have been debiting my account by R109/month since March. I demand that Vodacom reimburses the money that they have deducted for this serice to date as I have made it clear that I was not interrested in this product and have cancelled the contract in March already.</p>