Vodacoms Pathetic service in rectifying a mistake

Posting this on behalf of my father. His contract bill all of a sudden shot through the roof and upon a little bit of investigation he found that it was a ********** upgrade on his contracts. he has been paying for these on a direct debit for months now and there is no end in sight as no one at vodacom can help him with this. WHY TAKE A VODACOM CONTRACT OUT IF THEY CANT EVEN KEEP YOUR INFORMATION PRIVATE. Come on vodacom he can not be held responsible for your incompetence. This has taken more than long enough to sort out.