Contacting Building Management for Heater Issues: what to say in English

Hi, the heater in my unit isn't working and it's freezing in here. Can someone come take a look?

Requesting help for a broken heater

I tried turning it on and off, but nothing happens. I think it might be completely dead.

Explaining attempts to fix the heater

It's been making a weird banging noise all night. I'm worried it's going to break.

Expressing concern about heater noises

I'll send someone over tomorrow morning. Will you be home between 9 and 12?

Confirming availability for a repair visit

Can you send me a photo or video so I can see what's going on?

Requesting visual evidence of the issue

This is pretty urgent — it's minus 15 outside and the temperature in my place is dropping fast.

Stressing urgency due to cold temperatures

It's been three days since I reported it. Any update on when it'll be fixed?

Asking for repair status update

Can I borrow a space heater in the meantime? I can't sleep like this.

Requesting a temporary heating solution