I HAVE paid my TV license. Contact me to discuss

I paid my TV license through www.tvlic.co.za using my email account ***. I got a reference number from Nedbank saying the license was paid. Now SABC says it hasn't been paid and want to handle me over to a credit bureau. I asked them through WhatsApp to phone me, but they have not contacted me. It is worth noting that when I logged into the system, it says says my account status is invalid. I have paid my TV license and don't see why I should have to pay again. Please contact me to sort this out. Your WhatsApp system is not working for me. You do not contact me at the agreed time. I have agreed twice for you to phone me, but no one phoned me.