The Worse internet provider, worse than Government

I'm having the worst Home Fibre experience with SuperSonic MTN.. They should never be allowed to operate here in South Africa. I did not have internet for 2 month, when I pay for the month with internet I get billed for the previous months without service. I send proof of payment they suspend my service and immediately threaten to cancel connection, I already don't have service in December because I must pay for months without service. I just don't understand this Co.

I have no service but I paid.. they take 45 min to answer phone, 1hr to reply to whatsApp and 3 to 5 days to respond to email. Why and how are they still in business?