Caller: myself i guess lol

my old samsung A20 has been in a police station as evidence for a court case involving me and my biological father, i got a call from my number 0406 250 808 and i know its my phone number as it has my birthday in it the 25th of the 8th/August. it wasnt the police station as i know their number. when i called back it went to my voice mail meaning my phone is dead or the police declined it. a few weeks ago i got another call from it. the person on the other line claimed to be my mother. my mother is british and this person had a russian accent no where near mine which is aussie and british combined. im not adopted. we got a blood test as i was skeptical for a bit after this, my father is my father and my mum is mum.