Went and got permanet put on front tooth in 2008... Woke up the other day and it just fell out! My tooth Rotted OFF.. Now I have to have this tooth extracted and a post put in... Should I have to pay for this or should a root canal have been preformed before the crown was placed to begin with?

Quite some time has passed it seems since you had your crown done. It is likely due to untreated tooth decay.