Just to make things perfectly clear, the police have no duty to protect you or even respond to your calls for help.
Warren V District Of Columbia

Just to pique your interest:
"

Warren and Taliaferro crawled back inside their room. They again heard Douglas' continuing screams; again called the police; told the officer that the intruders had entered the home, and requested immediate assistance. Once again, a police officer assured them that help was on the way. This second call was received at 6:42 a. m. and recorded merely as "investigate the trouble" - it was never dispatched to any police officers.

Believing the police might be in the house, Warren and Taliaferro called down to Douglas, thereby alerting Kent to their presence. Kent and Morse then forced all three women, at knifepoint, to accompany them to Kent's apartment. For the next fourteen hours the women were held captive, raped, robbed, beaten, forced to commit sexual acts upon each other, and made to submit to the sexual demands of Kent and Morse."

The police never came.....