Dear student,

Yes you can withdraw you name for the college at any point in time you feel suitable, you just have to submit an application to the principal telling the reason you want to quit studying in the institution.

As per the matter of fee if you have studied a semester there they might not refund the fee but if you have not taken a single class there and paid the full fees and then you want to withdraw you name then there is a high chance that you will get you full payment back, the exact detail will only be clear when you will contact the college authorities.