Vodacom will not refund our money

<p>We had a business account with Vodacom with 5 mobile numbers attached to it. In January we requested the entire account and all attached numbers be cancelled. They cancelled 4 and left one active and continued to invoice and debit our bank account for this number which was not in use. We made numerous requests to cancel and they did not. They eventually said in August that the number was cancelled but then debited the bank account again in September. They have flat out refused to refund what they have charged us since January because we do not have a reference number to prove we requested cancellation. Surely the 4 other numbers cancelled is proof that there was a request for cancellation.</p>