Answer:
free rider
Step-by-step explanation:
In economics, a free rider is someone that benefits from using some service or good but is not doing anything to pay for his/her consumption of the service or good, i.e. they are using something for free and they do not wish to change that situation.
Free riders are much more common than what many believe, for example, people living in the suburbs that go into a city and use their public services, e.g. transportation, roads, police officers, parks, etc.