This is a call from Santa, that someone you know sent you. This is a fun Google thing. (My hubby just sent a call to me, lol) The website for this is:

https://santatracker.google.com/#callfromsanta

Someone was sending you a personalized call from Santa using a Google service, for fun. If they send it again, you might want to answer (my hubby had to resend as I never answer unknown calls lol) Merry Christmas :)

Call from Santa?  In May?  I think not!  No message left.  Number now blocked!