10G gone

So yesterday I took the Telkom October Big Deal, I have had great network with them compared to the other network I have. It really sounded like a life saver until 10G was gone in less than 24 hours of me getting the data, I updated my software so I could have lived with 5G at most. Came back from work this afternoon and within 2hrs of connecting 3G was gone, called their callcentre, the lady said to turn off Backround refresh, which I did ( have never even used 10G a month with my Backround refresh on, let alone in 24hrs) . Left the house, been back for 30min and guess what? 1G gone!!!!! Surely this is insane, being on Twitter and watsapp for 20min cannot chow 1G!!! I called again and apparently they cannot tell me what could be the course of this, I mean the 1G I get with them on my other contract lasts me atleast a week, I even use it as a hotspot for my other phone. Unacceptable! Here I was thinking I can cancel my contract with the other network .