Uh oh, wrong building? I would check the rez application as soon as possible! perhaps your assignment changed! =/. Also clicking that link doesn't actually charge you!
ANd your phone in residence can definitely receive calls from local numbers (hamilton) or outside of it. You just won't be able to make long distance phone calls, in that case, I would recommend calling cards instead of getting a plan. Because no other plan is allowed than the mac one, yet phone cards are allowed