dissappearing data

<p>My data on a data contract has been disappearing. i thought it was consumbtion form our side or someone in the family is consumng data</p> <p>i requested call/data log to my surprice</p> <p>as of 26 may 2017, 0n a free me 20gb plus 1gb i topped up with, i only consumed 10.7gb of which 10,3 disaapeared</p> <p> </p> <p>0n a 100gb my consumption from data log shows i only consumed 11gb</p> <p> </p> <p>i want my account be investigated from beggining of contract , and refunded with all my premiums from the time of diiscripancy. </p>