Bad Billing by Showmax

I recently signed up for a Showmax trial 14-day trial and was supposed to end today. I cancelled the trial today and my account was debited with R99.

I queried this on the Live Chat and I have been met with nothing but unsatisfactory assistance. I have been told that I allegedly have an active account by someone named Ursula Louw from Cape Town using ********** I don't know who this person is and I have told the lady I was chatting with countless times. I asked for the money to be reversed because it is not my account and I don't know who this person is. I was told this is not possible and should be "more vigilant". This Ursula registered with Showmax on 16-02-19 and I registered later than that. Her trial ended on 02-03-19, but "her debit" is suddenly going off on the same day that my trial ends?

I want my money back because clearly I am not Ursula Louw, but Sihle Qekeleshe and my email address used when registering with Showmax is **********