Who called from 4029820636

This is the third time I have recieved a call from this number on my cell phone. I have requested to unscribe from their call list and I still keep on gettin calls.
Do something

this is the third time I have received a call from this number but they never talk after I said
hello they hung up.

After I said hello, there was a long silence, and then a female voice said goodbye. The caller did nothing more than interrupt may afternoon nap. So what was the point of the call?

After I said hello, there was a long silence, and then a female voice said goodbye. The caller did nothing more than interrupt my afternoon nap. So what was the point of the call?

I got a call today from this number, she "Emi" she was calling from "National Insurance Verification"  after putting them on hold they hung up.