BAD ATTITUDE AND ACCOUNTING ISSUES

I took out a new contract it was a sim only contract. I was informed by the salesman that the minutes, data and sms's would carry over from month to month. they did not carry over. I queried it with Vodacom, spoke to 4 people on the call centre none had the intelligence to understand this relatively small issue. I went to the Norwood branch in frustration. Spoke to a manager there named Christian, says that I was misinformed by his staff member and that he will make the staff member pay me or he will fire him. His attitude stinks. I don't need to know how they deal internally I should not be left guilt ridden with the consequences. mistakes happen, I get it, I do not want him to be fired at all, this would be the most extreme measure that would not fit the error at all. Vodacom should simply amend the contract so that the minutes carry over. that is all I want. I will forfeit the minutes I have lost to date. please deal with this immediately or I will take further action if required.