FNB

My Aunt passed away in January and she had a savings account where she saved lot of money for her 2 kids to go to school.So my late Aunt older daughter who is 29 years old was made a beneficiary.So they went to FNB bank to claim the savings but the bank told her to wait 3 months and provided documents needed. So we waited for 3 months but still the savings aren't claimed.So my late aunt llolder daughter went back to FNB bank then she was told to waiting a week.So she waited for week and she was told to wait 48 hours. My late Aunt older daughter kept going to FNB but they kept giving her excuses to wait 48 until now and it's about 2 months since she is waiting. Now my late Aunt older sister and son who is 13 years old are being kicked out of school due to not paying school fees.FNB act like it's there for you but for real it's there for your money. So now My late Aunty kicks are suffering and the FNB keep making excuses for not releasing the savings account. How can we deal with such?