To withdraw your PF, there should be minimum 60 days gap, so after 2 months you will be eligible to withdraw your PF.
The procedure is very simple you just contact HR regarding PF withdrawal, There are several forms should be fill up. The forms are as follows, Form No. 10-c, 19, 5 & 10.
The forms should be fill up & stamp and sign with Authorized signatory along with your either passbook or cheque book photocopy.
The PF forms can be submitted if all the procedure completed and the amount will be credited in your bank account within min. 15 days.
@Ramjan.Ali As you've mentioned that you have completed your PF procedure in Dec 2014 so you should get the amount at least by end of January 2015. Kindly contact your company and ask them the status. I doubt that your company has not submitted the form yet. If they have already submitted the forms to PF office then ask for the O/c. copy because @PF office Public relation officer definitely stamped with the received date. Thus you can contact to PF office with that evidence.