It is possible to construct a building in such a way that no radio signals get either in or out. It's called a Faraday Cage. It can be intentional or the byproduct of the use of modern building materials, most notably aluminized insulation barriers and glass. Sometimes carriers put micro-cells inside some buildings but they need to cooperation of the buildings' owners to do this.
Hi there magenta1782854 and thanks for posting.
That's rough hearing that you're having trouble with signal, but drnewcomb2 brought up some possible reasons why signal can be problematic in buildings like this. You're welcome to Contact Us and have our Tech Care folks file a Service Complaint for this location, just remember that the complaint could come back mentioning the building's structure could cause this problem.