debit order switch

I have switched my debit order from capitec to nedbank. That's was early July. The bank and I have confirmed that that the banking details have changed to nedbank. The 27th of July came and the debit was unpaid at capitec of R767 and successful at nedbank of R508. I received a sms that my full amounts is outstanding and I need to make a payments urgently. I went to tygervalley branch and was advised that this would be sorted out and that the person that normally deals with this will only be in on Monday and she will sort it out and contact. I have received no calls , just sms that I am overdue. I am sick of Vodacom and there *********** staff. I have been a customer with vodacom forever and this is the service I get. I am utterly disgusted