Bond double debit dilema

Opened a new bond account with Nedbank recently and have to say that I regret it. This is the second month that our bond installment is deducted from our account in error, after us informing the bank that my husband's employer will pay over the bond amount directly from his salary. The result; The employer pays over the money and Nedbank goes and debits my husband's account for the same amount. Not small amounts, no. the full bond amount! I was forgiving when it happened the first time but here we are, experiencing the same issue for the second time. I call the contact centre and when I tell the consultants that I am not willing to wait 2-3 days to get the money back, they put me on hold and drop the line after letting me hold for 20+ min. Awesome service! Last month, we received no call from management to apologise for the inconvenience, and this month will probably be the same. We are left to make arrangements and call around and send numerous emails to people who could not care less about the inconvenience they are causing. Deeply disappointed and regretting that I moved to Nedbank!