Vodacom *****ing money, weakening my credit scoring

Last month Vodacom stole R8000 from my husband's bank account. After weeks of trying to get hold of them, holding on for hours, going to their offices, waiting to hear speak to a consultant, they still have made no effort to admit to the mistake. In the meantime, his credit scoring has been negatively affected and Vodacom refuses to provide him with a letter stating their mistake . This is disgusting!!! Seems like they are running a ponzy scheme opver there!!