No customer ethics

I've had a terrible experience with MTN's customer service. On October 20, 2023, I requested an explanation for a double installment but received no feedback. On October 26, 2023, I got an email saying my number would be converted to Prepaid with a balance of R0, but my installments kept getting deducted. Despite numerous attempts to contact them, I haven't received any assistance. It seems they're quick to take your money and offer deals but slow to help when issues arise, perhaps their way of taking advantage of people.