hello and welcome-
due to the temperature, i think if i was in yours shoes, i would research some local shelters and text him the phone numbers. and then i wouldn't take his calls anymore, only text messages regarding the girls.
if you have a good friend, you could buy a pay as you go cell phone and give it to her. that way, if it's important, she can tell you and she censor out the rest. and then you can change your own phone number or block him on your phone.
naive