Telkom accounts department *****ing money from clients

The accounts department really dont know what they doing, i have a cell contract that i took out in December but they start billing from November, they have triplicated my billing from December to January & have debited my account. When you call in to complain all they say is that the query has been escalated. Its been 3 minths now they haven’t refunded me & just keep taking unnecessary money out of my account. If this query isn’t sorted out i wont have money to pay my other accounts as telkom is too busy *****ing money