Vodacom wants to rip me off. Vodacom is ****ming us.

Vodacom is a ****. I have had my contract for 10months and my line has been a closed line. All of a sudden come the 15th I’m being debited 4times more than what I usually paid. When I call Vodacom they claim that I bought 20gb once off for R1300 who in their right mind would buy such expensive data. I have been calling for the past three months and no luck. No one Can answer how is a closed line now suddenly open? And when was it open and who authorised these ridiculous purchases. I am sad because I went from paying R800 a month to being charged R5000 for something I know nothing of. My advise to you guys is please stay away from Vodacom contract, they are a ****. When I call the 135 call centre assistance claim to put me through to the call center then suddenly the no. Is no longer in use and they hang up.All I want is the proof and answers!! I have emailed customer services and nothing! . Is it a race card? If I was white would I have received the answers. I want answers Vodacom!