VODACOM DEDUCTING MONEY FROM ACCOUNT

On December my mother wanted to buy a phone on contract from Game. The consultant made the mistake of making it 2 phones instead of one. She canceled the contract and went back again to buy the phone and they said her credit score is low because of the cancelation of the contract. She went to the Vodacom shop because they are deducting money in her account for the 2 phones she never took. They said they'll call her back because there's a queue. She's been waiting ever since. She called again to no assistance. She reverses the payments made to Vodacom which is bad for her credit score. Please Vodacom stop deducting money from her phones for a mistake that she didn't make.