Previously used ssri, benzo and

2 years ago i was prescribed fluoxetine,clonazepam and olanzapine for 11 months of duration the clonazepam was tapered and discontinued after 3 months and fluoxetine and olanzapine were continued with changing dosage for the rest of the treatment, its been 2 years since the medicine course was stopped and I've never been the same person , a part of by brain feels strangely asleep, there's no joy anywhere, despite being in an excellent educational institute i don't attend my college and barely appear for exams ,i was earlier very good in academics, decent in sports and fairly social  ,and now i feel a strange disconnection and numbness ,there's no interest there's no fear of consequences or concern of future,i can't think properly I can't speak very well my words many times fumble and i talk like a scared confused idiot,and when i complain this all the doc just says to continue similar medication and previous were low dose so that's unlikely the cause. WHY DO THE DOCTOR ALWAYS DENY?