After payment made line was suspended

I had received an sms on the 13.05.2015 stating that the line will be suspended if payment is not made within 48 hours. Payment was made via cash deposit on the 14.05.2015 and proof was emailed early this morning. The line was still suspended even though payment was made. How can an account not be credited after payment was made??? We are in 2015 where banking is immediate. Telkom needs to upgrade their payment system. I am really unhappy with this especially that payment was made and the line was still disconnected.