RAIN mobile provides terrible customer experience - I regret responding to their ad campaign

I'm a new customer that had my Rain Simcard delivered by Takealot. I bought the R479 deal Rain offers through its advertising campaign. They promise that the card works withing 2hr from activation. I followed their online process, but not everything works as promised to get a SIM activated. They promise a chat feature, but there is none, just a form with an autoresponder via email with another promise of an agent contacting you. That doesn't ACTUALLY happen either. You can't call them because of social distancing - there is just no way to get help. Now I spent my hard-earned money and end up with no internet connectivity which is what I bought. I just feel like I've been suckered by false advertising and a company who is reluctant to assist me. How do I get my money back?