WORSE NETWORK EVER

It has been a while now that I recharge and my airtime dissappear, when I first called the consultant pretended as if she can't hear me, today am told that apps are the ones consuing my airtime, while am having data, when I tell Karabo (consultant ) that I ported to cell c because I was told that it's cheap, meaning was using MTN on the very phone, and nothing of that sort never happened with MTN including Vodacom, he says he can't confirm that.my phone is set not to auto update itself, and background data is restricted, if I where to rate cell c out of 10 I would give it -5.I lost my units all because of cell c, I regret the day I ported to cell c