Ninja fibre is such a disappointment 😞

The 5th of May the fiber just stopped working in the morning. I logged a ticket for to be fixed it was never fixed. Today on the 29th I get the sms saying that I must remember to pay on time because they will disconnect and I will be charged an additional R100 for reconnection. I ask myself that they will disconnect what if already it is not working. They should be telling me that they will reimburse me for the month of May because I paid but did not get the services I paid for. I don't think they knows how to service thier customers. How do I continue to pay for something that is not working?