Why have a cellphone

I have had a cell c contract since I got my first phone in 2005. The names have changed but the details have always been similar: 200 mins, 200 sms, 200gig etc. But when I renewed last year, I learnt that for some reason cell c decided to divide my minutes between cell c to cell calls and any network calls. Plus the divide was something like 70/30. So now instead of getting 200 mins that I've been paying for, I now get 140 mins to spend on cell c customers and only 60 to other networks. I was highly upset about this because this was not explained to me when I got the contract but I had already signed so there was nothing I could do except purchase additional any network minutes for extra money that I was already paying monthly. Now today, I m unable to make any calls except to my mom who's number starts with 084. I called the cell c centre and they tell me that the extra anytime minutes extension was deactivated for no reason. I didn't cancel it and she cannot tell me why or who canceled it. Then I ask how come if I have cell c minutes that my call still dropped while talking to a cell c customer and she tells me that my cell c to cell c minutes, which is most of my contract is only for numbers that start with 084. I mean what the hell. That is pathetic. It negates the safety and benefits of having a contract. I am definitely not upgrading next year.