Who called from 6303587303

Left no message it doesnt ring when you call it back

I received a call on my cell and I did not recognize the number.  I returned the call and got a message from Verday(??) Energy Co.  The message said they'd call back later.  They give you the opportunity to be placed on their Do Not Call list by pressing "1" which I did.  Let's hope that's the end of it.

Called & left no message.

Called left no message.

Got a call to how do I block these numbers