Unable to withdraw and blocked

I deposited R3800 and the guy I was speaking to from swiss chains said that a financial advisor would call me to assist me with logging into mt4 and give me the MT4 server, and my MT4 ID, after some time I realise no one was calling, I spoke to the guy there and he started ignoring me, then they blocked me on whatsapp for trying to call. Now I can't even access their broker on the internet, my withdrawal is still pending.