automated service faulty

I am in the process of changing bank accounts so my payment accidently bounced this month as I needed to put in a small extra amount. I immediately made sure the money was correct and tried to contact vodacom. After numerous attempts on the automated self help line aswell as logging online and placing a request for the debit order to be resubmitted it was still not done. I have been trying for nearly 2 weeks. You can never get put through to an actual operator for assistance and the the automated service is faulty when pressing the date options. I do not have time to go into store to pay it as I have my mother recovering from major surgery. Vodacom needs to assist me asap.