I am sorry you are dealing with this.

I have experienced akathisia with some of the antipsychotics. Abilify... I could not even stick to for a week because of how horrible the akathisia was.
Extrapyramidal Side Effects (EPSE) are unfortunately quite common in many of the antipsychotics. Seroquel is of few to not induce any EPSE like akathisia.

You could wait it out to see if it subsides, but you do express it as unbearable, so you could perhaps express this to another doctor, as still_crazy has said? An alternative is the possibility of something to help calm the akathisia- I have read that there are medications that help settle that restlessness.

The question of what I would do: I had experienced this before and my doc is thankfully very understanding. If my doctor did not advise me to stop taking it, I would seek the guidance of a different doctor.

I hope things get better.