Lack of sympathy

I called in letting them know that I have been retrenched and that I could not pay towards my loan as I'm unemployed , I was told to send my documents in as the insurance will cover the loan as I'm unemployed. I then made it clear that I cnt make a payment a few days later the amount was taken from my account which was the only money that I had for the month . I then tried calling asking to reverse the debit that was taken but the advisors on the phone kept saying that there is nothing they can so and its unfortunate it went out as I was liable tho I spoke a few days before saying I cnt make a payment ..