I want to part with some of my coins. Any recommendations where

I have been collecting South African coins and other coins for the past two years, building a diverse and interesting collection. However, due to financial needs, I am considering parting with some of them. Despite my passion for coin collecting, I am finding it difficult to trust buyers, which adds a layer of complexity to the process. 

Does anyone have recommendations of trustworthy buyers that wont go and melt the coins or turn them into jewellery lol   
I live in South Africa.