What is Phone Number 503139143?

Can I ask a question is Phone Number 503139143.
– Who is the owner of the phone number.. Why do they call me constantly at 2021-11-19 08:16:47

Can someone tell me what to do with 503139143 ?

Thank you very much
Recent, Discussion at 2021-11-19 08:16:47 by anonymous :
why am i getting so many spam calls on my cell phone