Data missing with the sim out of device

<p>I have put 1GB data on the 5/12/2016 on my router to prepair for a important support meeting on the 6/12/2016 . When i have installed the router and put the data on the simcard R149 that by itself is **************** , i have then put off the router by the power plug and the next day i went to work and came back home and then i put on the router and connected my laptop to the router and got the message that the data bundel is debleated ??? i contacted vodacom and asked them what happend ? and they told me my data was being used 12:30 - 3:05 in the moring ? my device i unpluged at the wall socet to save my data for the meeting ..... R149 gone 1Gb GONE !!! they can't help me , so my data has been ****** and they cant assist me ..... </p>