Content service charges done *******y on cell phone ***

We have 3 debits put through on one of our sales reps accounts - 03/06/17 for R524.97, 03/07/17 for R251.99, 03/08/17 for R77.00 with the reference Content service charge. We phoned vodacom and they told us to contact a company called GO4* on 010- ********** . We have spoken to a lady by the name of Louise on various occasions. She keeps on saying she has logged the query and referred it to the supervisor Ruben, he is also never available to speak to. We have phoned on 24/07, 27/07, 18/08, 13/09, 09/10, 10/10 every time they say they will log the complaint and nothing ever happen. We have asked for proof that we subscribed to this service as I know we did not. I therefore need these amounts credited to my account. At the end of the day Vodacom has allowed GO4* to debit my accout *******ly and Vodacom need to be responsible for this debit and not me.