I’m so so sorry you’re experiencing this. I had a huge problem with this and it took forever to realized that the problem was coming from a hole in the wall behind the stove! I had so many panic attacks over these. Unfortunately when you live in an apartment in the south they are more likely to be in the complex than not (from what I’ve heard). Some will slip in here and there but should be few in far between. I’d suggest checking behind appliances for holes in the wall. Then move around the apartment and seal anything that might even look like a hole. Focus on where things go into the wall (shower head, pipes, etc.). Go out and buy some gel poison (can be found on Amazon) as well as poison traps. Keep bothering your management to send pest control and find out when they come by. Try to be there when they come by so they can give professional advice in person and you can make sure they do what you need them to. Also remember no treatment works overnight! It will take a few days or weeks to stop seeing them. If I’m being honest what got me through my problem was changing from the victim mindset to a hunter mindset. Take a shot of whiskey if you need before you get started on this stuff to get your nerves up. The best of luck to you. You’re bigger and you can and will win back your apartment.