Confused chlid

Hello my name is kutlo makhubedu the second daughter of the deceased Patrick mokoena. My father passed away on the 10th January 2021.He was working at vector logistics as the manager. After his passing the deceased brother and sister informed the company that their brother had two daughters out of wedlock which is me kutlo and Le one kgoedi. In July me and my sister lebone contacted the company concerning our father's funds bu the companies HR which is mpumi we don't qualify for the deceased funds because we are over 21 years I was so shocked because iam still a student at Nelson Mandela university and I was depending on my father for fees and other staff. So I was hoping that you can help me and my sister in this matter. The deceased is Patrick Kgopotso Mokoena his ID is 700909547085.HR vectors no. Mpumi.. 0715337076..or 011 081 3300and for Director of the company is Anellisa.. 0833072099