Pest control is the landlords responsibility. Usually big landlords want to take care of a roach infestation because it can spread to other apartments and become a much more expensive issue.
If you live in an apartment building, they could be coming from some neighbor who has a bad infestation. In that case you need the landlord to deal with it because extermination won't stop them from coming back unless they treat every apartment.
It's the worst when people get up to go to the bathroom. Wear a diaper like a true cinema fan