Pathetic customer service

I got a call from Cell C direct telling me I can upgrade. So I did. They activated my new contract and I lost all my free minutes, data and sms's. I phoned them to ask why I lost all my data, minutes and sms's. They told me if the new contract is activated, all my stuff from the previous contract will be lost. That's how it unfortunately works. Besides that my old contract monthly debit order still went off. I basically still paid for my old contract but did not get my old contract's data,sms's and minutes. I called Cell C customer care line and they couldn't give me a clear answer why they deducted my old contract payment amount. I really don't mind paying one more month for my old contract, but then I want the data, sms's and minutes that comes with that's contract, that was not the case. The call center lady got really arrogant and inpatient with me when I just ask her to explain to me why. Another thing, they didn't even get my delivery address right for the delivery of my phone!