tenant (signed contract) want to change member inside flat

[orbita]

I am the tenant who signed the contract with the landlord.
Now my house members annoyed me so much that I cannot stand them any more. They smoke, talk loudly and were very vulga when I asked them to stop.
Do I have the right to ask them to move out?
It's my fault to anyhow ask anybody to share the house without knowing them well.
They have their names inside the contract but they didn't sign it. They share the deposit and agent fee with me.

Please help me. I'm now afraid to go home. Don't know when I sleep, whether they could do something harmful to me or not.

I'm very furious, confused at the moment. Sorry if my language sounds unorganized.
Thanks for viewing

[pat17eve]

Check with your agent to find out what are your options and if still not resolved seek legal advice.