selling ONT

[Horsetail]

I have 30 ONT currently worth $42. They are in an O3 wallet.  I want to see them and buy BTC. Hitbtc wont accept them, saying I need to have at least 0.01 ONG to go through with the transaction, but actually I have around 0.5 ONG.Changelly says they wont do the exchange as they want a (fluctuating figuire) 32 ONT minimum.  If anyone has an idea of websites  that deal with the stuff where I can exchange small amount BTC to

[tabas]

Then you should buy ONG first from its respective exchanges.
https://coinmarketcap.com/currencies/ontology-gas/#markets
And this kind of trade should be moved to Marketplace (Altcoins).