They say I got a loan

They said I took out a loan in 2014 and I never took out a loan they keep telling me the are going to send the cops with a   Warrant and take me to court  and then I will have to  pay 8000.00 it started out with 954.00 then it went down to 800.00 so I have been playing with them then it went down to 454.00 so I finally got tired of it and reminded them that I didn't take out a loan in 2014 and told them that I know they are a scam .they said we will see I told them to have fun because I am not paying any money for something I didn't get or even apply for and told them to leave me alone