International student without US income, almost 5 years on US. Should I file a tax return form?

[crica_firenze]

Im looking for help about tax purposes, I had been on IRS department, but they told me to call to International Department, which is impossible…
I arrived in US on January 25, 2011 as B2 (tourist), before my expired date I applied for change status visa, so like a tourist I had 340 days on 2011 calendar and 3 days on 2012 calendar.
As a student I had 362 days on 2012 calendar, 364 days on 2013 calendar, 364 days on calendar 2014, then 2015, my student visa will be expired on July 16, 2015 I’m confused because Im in US almost 5 years, but 1 calendar tax as tourist and 04 as student.
Also I have credit card without SSN information from Citibank and Macy’s; nonetheless some companies got my drive license # as SSN in their files (Comcast, real state, PECO) since Im leaving here and I have utilities and rent here, but some credit card company made the same, and Im using the credit card with wrong information, I didn’t know this, I just got this information few months ago, when the company called me and asked my SSN.
I don’t have income in US, my income comes from my country, and Im as my dad’s dependent for tax purposes, Im not making my country tax return since 2012 calendar.
I had filed W-8BEN Form 2013, 2014 on Citibank.
I know it’s confused, I really tried help on IRS Office, but they couldn’t help me.
So do I need to apply for Taxpayer Identification Numbers (TIN)?
Which Form I need to fill? Which steps to do it?

[pk]

as a non-resident alien, without US sourced / connected income there is no requirement for you to file an US return.  You can always apply for an ITIN but that needs to be used only if you have some income from the USA. ITIN may work with your credit cards but you are not eligible to work and/or earn in the USA. When you are classed as  resident, your world income would be taxed by the USA.

[crica_firenze]

Thank you! As I though.. Im worrying about the credit cards, because I don't want to break any rules, also I pretend to apply for OPT the end of graduation, so I can't have issues on my name. Thank you