Who called from 4029820719

I keep getting calls from this number. Have no idea who or what this is.

caller id said it was from OTO Inc. Did not recognize the number or the number so I ignored it.

They have called several times but leave no message.  I didn't    recognize the phone number.

i get them all dat long and I am getting tried of this.

Got a call from this number. Answered it and when the person started telling me how I could win money I interrupted him and told him his call was illegal. He said he would remove me from the list.