Dad stole my native money

Hi, I need some advice. Late November I received 4600$ from a native bursary that I haven’t collected in 4-5 years (I was unaware it existed). Once I received the money from the band, I started noticing I started drinking more and no longer felt comfortable holding that large amount of money. I plan on moving and didn’t want all of the money to be blown through, so I asked my father (non-native) to hold on to the money for me. He agreed that he would hold onto it for me but began becoming irritated whenever I would ask for small amounts (20 here, 50 there- even though that was the agreement).

After he began an argument today, he told me he would send the remainder of the money back but then back tracked and is now REFUSING to send it back. He is the one on my apartment lease, and I pay him each month directly however he is now threatening to have me removed immediately if I take any action to get my money back.

What can I do? Is this consider theft? Please help.