Not all information given with upgrade

<p>I did an early "upgrade" on my contract, but instead of taking a phone, I just renewed my number. Subscription is R129. When I received my account, I saw that I have to pay for 2 sybscription, the old one, untill the 24 months is up and the new one. I also lost the benefits on the old subscription. This was not explained to me. I called Cell C and the lady I spoke to, had no telephone manners and not very pleasant to deal with. I requested a manager to call me and I am still waiting</p>