Invoicing incorrextly

For the past three months, it appears that Telkom is not billing me correctly and the fact that I cannot speak to anyone. I did nit have money in my account, but paid via eft. This month i paid using myCapitec facility. No one at telkom is fixing the Rejection with the eft payment to reflect that money and lower the invoice to reflect that right debit order to go through. I want to just make pmt via eft than debit order which is simpler, but they are not operating in a manner that we could speak to someone at the business.....Telkom fix the invoices cause it is now showing double the payment to go off in the next month.