I have a problem with Vuma

I have a problem with Vuma. I have paid them on Friday and my network has not been open since. I have been with Vuma since the WiFi have been installed in our area and never had issues with them.i believe when I pay via pnp it should have picked up my ref or I'd number as it always does...am being told to send proof of payment for the very 1st time ever....meaning my WiFi won't work since I lost my proof of payment