Internet Access In Condo

When I moved into my rented condo, I was given info on one cable TV and one Internet provider for DSL saying these are the providers for our building. My contract is coming up for renewal and I was wondering if I could switch to a pre-paid wireless service. How would I determine if service would work in my building or is this even an option?

I have had too many problems with the service provider(Buddy) not crediting my credit card when payment was made, service turned off yet my bank account shows money deducted and I have to spend 30 minutes to one hour attempting to talk with their "English" call center department. I'm getting tired of this thus the reason for wanting to switch.