No way to check data balance on wifi modem

We have a Telkom wifi modem. We get day time & night time data. There is no way of checking the data balance as it expires at the end of the month. There's been months when several giggs of data expired due to us not being aware of how much data was left. We have to insert the sim into a cell phone to check the balance with the *188# or put the sim in the phone & then call the call centre. How customer friendly is that?