Unauthorized Debit orders

I had initially subscribed to 3Mobile in 2012/2013. <br> Unfortunately I found I was not utilizing the service, and therefore I emailed and contacted 3Mobile in 2014 to cancel the service, which I was assured was done.<br> I have recently been scrutinizing my bank statements to low and behold finding an unauthorized<br> debit order on 29/01/16 3M-663898-1 for R199.00.<br> <br> I have put a stop to my bank debit order to the company listed and would like reimbur*****t!