The Hammer is stopping at the Half-Cock Position. Something in the Firing Mechanism is broken or out of place and it's not readily diagnosable without actually seeing the Pistol and taking it apart. I could guess at it, but that really won't get your Pistol fixed.
I'll echo what our esteemed moderator shared with you.
The folks in Taurus Customer Service have been very helpful to me anytime I've had the occasion to contact them. Recently, they did a minor repair to my new Judge Ultralight and had it back to me in 14 days.