Help! Is it possible for tenants to steal internet connections?

[Elecsl]

If you suspect that someone is stealing your internet credentials, there are several things that you can do. First you can change your existing passwords so that others can not log in using stolen passwords. But if you can not do this still you can check whether someone is using your internet connection. You can request this facility from your internet service provider. They can check what are the IP address that using your internet connection or internet credentials. If that list is having IP address not belongs to you, those are suspicious IP address. Even then can check who is the owner of those IP address. In this way you can find whether someone is using your internet connection. But I not sure whether your service provider will charge for this service or not.