Dream of girlfriend

I keep being stalked by this man who i do not know and he keeps calling me his girlfriend . he always walks with me until i get home and then this time he says that he will see me in 3 days 36 hours and 5 minutes. i am really freaked out so i go home and tell my dad but he doesnt seem to believe me or be willing to protect me. i get frustrated and i cant get hold of the police.