Landlord snapped at me for wanting heat on and mentioning law – next steps?

Our apartment hasn’t had heat for over 48 hours and we texted the landlord as soon as we noticed the issue. I got fed up of sleeping without heat so I called him and mentioned that it’s 60 degrees so I’m wondering when he can turn it on. He started getting pissed over the phone saying texting is fine but why would I call him over 60 degrees?? I mentioned because it’s cold and we haven’t had heat for days. He kept repeating that I shouldn’t call him over 60 degrees (as if that’s not cold)..

Finally I said well the law is 68 degrees, and he got super defensive. He said “oh you’re mentioning the law? That’s all I need to know, of course we need to follow the law.” In a sarcastic tone and hung up.

Now I can manage with space heaters and layers but this is super annoying. It wasn’t the first time either. I don’t want him to not turn it on now because he has a petty vendetta.

If he doesn’t turn it on by tonight how should I proceed? I really like this apartment and I just want to not freeze 🥶