TELKOM NIGHT SURF DATA

Telkom's night surfer data doesn't work, whenever I recharge for 1GB I get 1GB night surfer that's supposed to work between 00.00 to 7am but it never works. Its 2h40am, I have 1024 MB "night surfer data" available however I cant surf the net. TELKOM YOU ARE TAKING US FOR A RIDE.....