Unexplained invoice

<p>can telkom please tell me why my free me plan invoice has gone from R498 to R998 in the past two months,despite me not purchasing any additional data from their *181# line. I called their customer care and spoke to Roxanne Diegaart who insists that it is for the additional data that I used. I only transferred any additional data from my own internet banking and was billed by my bank for this. The statement doesn't even explain when the additional data and voice was requested from Telkom. </p>