Home loan debited twice for the past three months

My wife has a home loan with you guys . You keep on deducting money from work and from the account it's been going on for three months now it's very irritating because there are other accounts which need to take money from her account. and...... this month they bounce. She's getting charged for you irresponsibility.whats so difficult to cancel the debit order as you already deducted from work .we call and spoke to this naidoo lady from home loan she failed to reverse the money .we have other life commitments than to always calling to reverse money .

Or we need to change this bank?

This is a promising if you don't fix this nonsense all the account we have with you will be closed.