Bad service Estate late account

My sister passed away 30th of October 2018, she was banking with ABSA bank. my mother opened an estate late account at Ulundi branch with ABSA for all her funds to be deposited in that account. what is strange is that there is a debit order that went out of that account and its reporting to my sister cell number. last time I was a small business manager at one of the banks, estate late accounts doesn't have a card and no debit orders should be allowed on that account. I am disappointed with ABSA , whoever opened that account didn't structure the account accordingly and that should be attended and all reversed, unless I will have to contact the OMBUDS .