phone cut after confirming that account is paid

I did not receive an account and paid the amount that I paid the previous month. On the 5th I upgraded my sons phone. I tried to take out a new contract and change the other contract to prepaid it was declined. After I left vodacom I received a message that I owed R112.02. I made arrangements to pay before the 6th. I went home and made the payment. I called and told them I made payment. I was asked to sent the proof of payment to [Email Removed] I did that and called the call centre to check if the payment was received. They confirmed that they had received the payment. I went into the voashop and they confirmed that the outstanding was zero. I sent a message and when I wnted to check if there was a reply my phone is off. I work at the University of Johannesburg and we are busy with registration and are expecting problems with protests. My work are starting a chat group to send security updates, which I will not receive which is a danger as I will not know if the campus is closed due to protest action. I also drive to Auckland park every day and travel through Johannesburg city and Fordsburg to work which is also not a safe area. I will not be able to call in an emergency.