Unhappy client

I'm very disappointed with Vodacom. Firstly there was a Whatsapp ticket on my account that I never gave permission for and secondly my contract was migrated after I was told be a call center agent I can change my subscription without any change in the amount I will be paying. Just to be surprised by my statement with a R134 change on my contract. I cannot afford this . I just want to whatsapp ticket to be cancelled and the migration be reversed . I feel ****med and this after being with Vodacom for almost 10 years.