Data *******

They loaded me with only 10GB instead of 30GB and deducted the whole amount and last month my 30GB data got finished before the 8th, i just came out their store now at Kempton park festival mall and the lady that was assisting me says i used the data while im telling her i didn't because during the day im at work using the wi-fi at work and i live alone at home but she's claiming there is someone using it even though im telling her there is no one using it besides me, whats happening with Telkom??