Horrible service at vodacom

I'm writing for the third time complaining about vodacom bad service. I feel so helpless. Everything i call, I relate my story. Vidacom is my worst nightmare. Since I upgraded in Octor, they still charge me for two phones. Customer service complain about afterssles, then after sales complains about Finance. I regret the day I upgraded online. I'm being charged for the phone they receive back. Can someone please help me.😭😭😭