misleading an upgrade

I have been a very happy Vodacom customer until they called me for an upgrade on my data package I have on my phone, what was explained to me that I will receive still my 2 gig during the day as well as 2 gig at night, never was it said that I will loose my prepaid a count, so you can imagine how furious I was when purchasing a voucher and unable to load it then when calling the customers care line to the lady that assisted me this morning I do want to apologise for treating her so rudely, but to Vodacom your staff is misleading your customers and after going to a Vodacom to resolve this problem some of the staff told me that most of their clients that take an upgrade over the phone has similar problems because of the call centre staff. I have always though Vodacom is the best provider but after today I am ready to move to MTN, this is a matter I will not just leave. This is the worst service I have ever received. And do not believe in putting anything on hello Peter but this is unacceptable! !!<br>