Feeling Stuck in a Routine Job: How Can I Communicate My Need for Growth to HR?

Hello everyone, I recently joined as an admin assistant in a certain company in Nigeria. I have worked for more than a year in this company. I accepted the job in the hope that my job description would entail a wide range of administrative duties that would give me exposure to HR and admin duties. Instead, all I do is filing, registration of mails and dispatch, making tea, and serving food to my boss. I feel like I am wasting my time and not challenging my brain as I need tasks that require thinking and finding solutions to issues. How do I communicate this to HR, as I have tried in the past but was dismissed? I don't want to lose my job. I need advice from my seniors.

Thanks.

Volunteer to do extra jobs when the chance arises. Some employees in the HR department may be on leave or unavailable; show your willingness to shoulder additional load without compromising on present tasks. This display of willingness to put in extra work will impress your bosses.