Data depleting rapidly

I have a 30/30 gigs LTE bundle with Supersonic. Activation was done Saturday 02 May late afternoon. Today 07 May my 30 gig daytime data is depleted, left with 19 gig nightime . I contacted the Supersonic technical support to try and get some to explanation; was told data could be depleted by torrent

I downloaded 2 movies on Saturday ( 443 mb and another 140 mb) to test the speed of the service. Since then uses the wifi for social media- facebook, twitter, instagram, whatsapp, and itunes. I am very mindful and use my data sparingly as I am not a huge consumer. I also asked one of my colleagues who is the head of technical department to check if there was anything depleting my data on my laptop and there was nothing-he confirmed that there was nothing running in the background that could be depleting my data. No torrent found. Now I am left wondering how 40 gigs could be depleted in 5 days? Something is not adding up.

How possible is it to deplete 11 Nightime gigs in my sleep? I am being ****** here. Mind you I live alone so there is no way this data is being consumed by anyone else. Also have a Vodacom ****le which I use for work - have not used Supersonic data for work related stuff so how is data bleeding out quickly?

At most I use 200 mb a day on my cellphone data. How could I have used 40 gigs in 5 days is beyond me!

I suspect there is a flaw in Supersonics system. I am being ********** here