Have not had gas in my apartment since January, wh...

Have not had gas in my apartment since January, which affects not only the stove, but the washer/dryer as well. Fairstead didn't send a construction team to address the issue until July, despite multiple complaints from the entire building. The construction team they hired ended up quitting after tearing open the walls of 3 different rooms in my apartment and leaving the massive holes uncovered for weeks, allowing pests into the apartment.
After 6 years of living in this building, I finally moved out in August, as the unresponsiveness of the management company made it unlivable. On multiple occasions, construction teams or even the property manager himself would show up at my door with zero warning (no email, text, or phone call--legally, 24 hours notice is required), and on a few occasions, they came by surprise at 7:30am.
I am still awaiting the return of my security deposit a full month after I've moved out. 3 weeks ago they claimed that they didn't have a security deposit from me, after which I provided the check receipts as well as the lease, which clearly proved otherwise. They have not replied to my emails and phone calls since then. STAY AWAY FROM THIS MANAGEMENT COMPANY.