******* on data

<p> I took a new contract with mtn on 17/05/2017 I was given 30gb which expires on 16/06/2017 the first week I send my cell continuous downloading apps and watching movies on the cartoon Hd app, my data at the end of that week was still 26.18gb I have used my cell till Monday 05/06/2017mid day and when I checked balance was 18.23gb I haven't used the cell from then till today morning and when I checked my balance it is 485mb which is ridiculous how cantata deplete from gigs to megabytes without it being used I phone customer care speak to mobile mathondo and she says go to data trafficking see what being used I check that and not even 8gb has been used this past week, where has the data gone mtn, with no possible explanation mobile says apps upgrading took the data when I further question this as it doesn't take gigs to upgrade she remains silent to explanation I ask if this 30gb of data is a **** and lie to lure customers I'm told no, but what else explain this missing unused data . I find the ethics of MTN despicable, my request for a report on the unused data has been sent through and I want it immediately I know MTN will somehow cook up an excuse to show I have used this data which I haven't, MTN I want a call back with a full explanation on my missing data if not I am taking this phone back to your Chatsworth store you can deduct your money for this month the cell is still in original packaging not even the stickers were removed as I refuse to do business with such a dishonorable and pathetic excuse for a cellphone retailer of a company , I have contracts with cell c and telkom till date I have had no problems with data, MTN do not make promises to customers which you cannot fulfill.awaiting your response urgently on this matter</p>