Disappearing data

<p>I bought data on the 13th of February 2017 at around 15:44 via internet banking because my data was depleted. After receiving the sms for successfully loading my data, my phone couldn't log on the internet and this persisted for a while up until i restarted my phone about 3 times. At 19:13 i checked the balance only to find out that my data is depleted (0 MB). It did not make sense to me that after buying 300MB and receiving 150MB and struggling to log in or use whatsapp my data could be gone like that. I then contacted MTN and i was told that the system is having challenges they cannot locate the data bundle that i was talking about and i should call back after 2 hours, of which i obliged. I then called again hoping that the issue will be resolved and to my disappointment, i was told the system was still not working optimally, i must call again withing the next 24 hours. </p> <p> </p> <p>This morning i called again and now a new story came that I did buy the 300MB but it is night express. I do not remember anyday buying data for night surfing and another thing was that the data could have been depleted by applications running in the background. I have been using this phone for a while now and this is a first ive heard that 450MB of data can be depleted by background applications within an hour.</p> <p> </p> <p>And further to this, I wanted to find out if the free twitter from MTN does use data in arrears then chow your data when you load and the agent said that she was not aware of 'Enjoy free twitter with MTN'</p> <p> </p> <p>I am concerned about my data that has disappeared</p>