I need some advice, please!

I soon need to renew my passport, but not being US or Canadian, I don't have an embassy here.

It's easy enough for me to send my passport back home to be renewed, and they will send it back by international courier.

Only problem is I don't have a clue how to receive an international courier package here as I heard couriers don't come to the island.

Would really appreciate advice on what to do....