false activity period for nigh data

I'm a contract person under my mother's contract as the debit orders comes of R251.16 off from my account for a Huawei G7. I receive 512MB day and midnight data and was told the night surfer data is active between the hours 1am and 7am... however mine doesn't work after 6am. I've called your called centre to confirm the times and your agent verified that it's supposed to work until 7 &amp