This kind of stuff seems so common and it's sad that we don't think
it's a big deal. Find the seller and tell the seller. Call the local
real estate governing body to get more info. Talk to a lawyer who
does litigation specifically in the area of real estate and try to
get some insight.

The agent stole from you, your time, energy and right to trust others
in business. The agent in essence stole from the seller what amounts
to several thousand dollars. If you steal a can of food cause you're
hungry or worse have a drug addiction you get handcuffed and likely
serve time. But if you wear a suit and tie and steal thousands, it is
normal.