Unless it was already a short-term lease agreement, which is not super common in CRE, chances are your company was still footing the bill for their lease on that office space. Most office space is leased on 5-10 year terms.
different contracts. ISPs may or may not be tied to the building. Our bandwidth in our offices was generally on 2-year contracts. We were locked into the building for 10-years, but if we wanted to turn off the power and water and phones we could have.