Who called from 4848412805

Have just had a call from this number by a guy who sounded drunk.  He knew my name!!  When I tried calling the number back it gave no name for the company but said no-one was available to talk right now.  Have tried several time but each time, the same answer!

tried of the calls

Called, came up private name so we don't answer those.  Looked up and 800 notes came up.  
No message left.

3 calls today-left NO message

I keep getting a call from a guy who ask if I am responsible for my phone number.