how many times we can write pcc exams

thanks a lot frends

i wrote this june 2009 exams  very sincere

but still i failed

wat is the fault i dont know on my side

but as we all know ca means come again

so how many times we should come again  ?  is the question on me ?

someone is saying 5 attempts and someone is saying unlimited

what is the correct information

i am very dull student

shuld i prefer to change my course ?