Disappointment from Vodacom

I am so disappointed. I complained how someone *****ulently upgraded my sister's contract at on of the shops. All vodacom did was blacklist my sister cause she is not paying that account that Vodacom specifically said that they are looking into the whole thing. All papers were send and everything submitted and acknowledged by vodacom. Not a single call has even been received from vodacom about the outcome. The only outcome received is my sister being blacklisted and when she went to find out why, she was told that she did an upgrade and she is not paying for it. Wow. I am disappointed and full of rage. People please be aware, if someone's account gets *****ulently upgraded, expect no help from vodacom. Just know you are still liable for that account.