Voucher Advance - Poor Service and processes.

I am appalled at the service and system of Vodacom. They sent me SMSes stating that I owe the voucher advance which I paid and they are threatening me with referring me to the credit bureau. I made this payment weeks ago. What is even shocking is the agents do not know of this voucher advance that is available on the Vodacom App. Train your staff on your products. Fix your systems and process as I have paid this amount and ensure that it reflects correctly on your side. ITS NOT THE AIRTIME ADVANCE.