That is disappointing. The person who sold it to my grandmother assured her it would be just fine in an office environment. She got it because I had mentioned that I needed to liven up my office. I guess the guy was just trying to make a sale?
Indeed, like in 90 percent of the cases on this forum, where people think they bought a bonsai, while what they actually got is just a fancy young plant that hasn't got anything to do with the art of bonsai. At least, not being worried about shaping it, but keeping it alive, you got your priorities right.
Not really sure if it's a juniper. Can you post a close-up of the foliage? Looking at the shape of the needles and the color I'm wondering if it could be a cryptomeria.
An office is rarely a good environment for any plants, let alone bonsai.