RUDE INEFFICENT CALL CENTRE AGENTS

I changed banking details in September,Ive done it via the call centre and all was in order,The debit order went off on the 20/09 without a problem,I then had to change the debit order back to Nedbank which I did with Absa a few days before the 20th,they advised the run is already being done so the debit order for 20/10 cannot be changed but they will make a note and I needed to make a manual payment for the 20/10. The consultant confirmed on the 22/10 that the debit order for the 20/11 will go off my Nedbank account,however today I get a call to say my account is in arrears because this months debit order didn't go through, My first issue is the very rude consultant then proceeded to drop the line on me when I advised the debit order should have gone off on the 20th from my Nedbank account,(Phumelo Radebe),I call back & the consultant advises me unfortunately the debit order has not been changed and I now need to go into the branch to change it,they have run the debit order off the Standard bank account which has now been returned,So I not only have to pay interest on the personal loan,I now pay an unpaid fee on the standard bank account.I want Absa to resolve today! Disgusting