Legal Cover unauthorized debit

On the 18th of June I went to Kagiso Mall to run errands and met one of the agents of legal cover. I fell for their **** because the agent said to me he wanted to check if I qualified for their cover. This morning I got a notification from my bank that a debit order for legal cover went through, a debit order which I didn't consent to. I called the company and to my surprise they told me that I gave them consent to debit my account and won't be refunded. This company is a **** and their agents are very manipulative. They need to be stopped before causing damage to unsuspecting people.