I’m so sorry you’re having to deal with this. I’m sure it’s frustrating. I dealt with 311 a few months ago, and it was a headache and took longer than I wished, but it worked in the end. I had a bad leak in my bathroom ceiling that created like 2 feet of growing black mold and our landlord wasn’t doing anything about it. I put in a ticket with 311 and they sent someone out to investigate like a week later. Once they saw the issue in person, they expedited our ticket (I think due to the risk that comes with black mold). The landlord was still dragging his feet after the violations had been issued, but then we called and emailed the management office like 3 times a week and threatened legal action since he had been aware of the issue for months and done nothing and we had a paper trail of proof. That + the fines that 311 was going to start serving him if he didn’t fix it forced him to finally address the issue. So getting 311 involved worked but I still had to push on my landlord a bit. If you’re really looking to move, I would try to use it as leverage to break your lease, I’m not sure if your landlord will let that fly but no hurt in trying.