Phone ISP for service.

Our internet at home is via Vumatel fibre and Cell C fibre. Last week, Wednesday, our connection went down, the blue light on the CPE was flashing. Two Emails to Vumatel were sent, no response. An email to Cell C fibre elicited a response asking for more information, then nothing further. A phone call to Cell C fibre resulted in us being informed that the problem was with Vumatel, which was apparent from the CPE, and that a service request would be raised. Received a reference number per email. Saturday morning as I was leaving our premises, a car stopped and the driver said he would fix our internet shortly. I passed him later, busy at a junction box near our house. Service was restored by the time I returned home, some 20 minutes later. Moral of the story is that emails get ignored. If one has an issue, phone. I really appreciate that the service guy stopped to give me some feedback.