False information provided regarding data contract

I recently added a 500MB data contract to my existing contract. I specifically asked whether there were any additional costs over and above the R45 pm contract fee and I was assured that there were none.<br> <br> I was however debited with R105-99 this morning. I made several follow up calls and I was even confused further!!!<br> <br> I want Vodacom to remove the additional charges and to settle the bill which I sent for wasting my time.