INCORRECT Placement Test Math Question. Man was I angry. What to do?

I just took a University's placement test and had an issue with one of the problems. Basic math problem.

Solve for x:

(4x-3)/(2)=-3(1/2)

The answer options were:

1

-1

1/4

-1/4

After not getting any of those answers my first time around, I tried again. And every time I could possible think of. The ONLY answer that made sense to me was x=0.

The test was NOT timed so I could fool around if I needed. However, I should mention the test was on the computer and you couldn't get to the next question until you answered the current one.

After switching up the equation for around 20 minutes I called the proctor over. I asked her if maybe there's a typo but she assured me the test was made by the state and there was no error; give it my best shot and come to an answer. I called her over once more after unsuccessful attempts to change my answer, to prove to her this couldn't be. She informed me that she didn't "know anything about math." It was after I called her over a third time that I did something I usually hate to do. I made a big fuss, politely of course. All said and done she printed out the question from her computer and informed me that she asked 4 math professors and all agreed the answer was there.

Needing to finish the test I entered an answer and moved on.

What do I do? I definitely want that point back and I don't want anyone else to get this problem.