Being Billed for their error

Last month I had a horrible experience with Vodacom, which I complained about on various networks. I was also advised by various people that I will NOT be billed for another Nano SIM card as the mistake was on Vodacom's side, yet on the 1/1/2016 my account was debited with the amount for a nano sim. This amount must be refunded as I WILL NOT be held accountable for Vodacom Chatz Tygervalley's *********** staff (Earl).<br> Furthermore I received my account via email in a Efa format and therefore cannot open it, please use pdf as this is the format that ALL institutions uses.