FNB cannot stop card after ***** is commited

I am writing on behalf of my disabled brother. His card was taken by the ATM and afterwards was out of order. Immediately money was withdrawn from another bank, he than stopped the card. After doing this, money was still being drawn. He stopped the card numerous times, even went into the bank personally. The than said that the card was stopped, but money was still being withdrawn. FNB would not allow us to close the account as it was in negative. As soon as money went in, the ***** continued. How is it, that my brother is losing money, but nothing is being done to stop the card or refund the money. This was a month ago and we've went into the bank countless times. This is very disturbing and unprofessional. Even after speaking to team leaders, they have been of no assistance. Marlene ***