Vumatel failure

I don’t expect a response from Vumatel as I I can see you ignore all complaints. Since load shedding in April I have no Internet 45 minutes after load shedding starts. Every single time there is loadshedding this happens. I have a new UPS so it is not that. My ISP has run tests and established that your vumatel Pop exchange fails after 45 minutes leaving me with no connectivity. I have reached out to you via a Twitter and received no useful response. Your infrastructure and service are lacking. I have set up my equipment to manage work throughout load shedding however your infrastructure fails me. I pay via my ISP for your service and this is unacceptable. I expect feedback on how this will be resolved