Who called from 3105552892

This number has called numerous times. I have called them back and it went to Spint 411. After talking to Spint they informed me that its possibly a telemarketer. The number called again and the man  ( who sound as if he was Indian)  started yelling at me telling me that I have to pay $500.00 on a loan that I dont have. I was informed the the sheriff will be at my work the next day to arrest me and I will do 6 months in jail. Who do these people think they are! How do I stop them from calling????

cannot even call number back to see who it is.

I have tried to call the number back after several received calls and told the number is not working-yet less than 3 min later they call.

This number calls my cell 3 or 4 times a day, unknown number to me so I do not answer, some California based number, does the do not call list even work ?

This number is beginning to call - how can we stop unwanted calls like this one and probably many others?